diff --git a/Modules/ExternalProject.cmake b/Modules/ExternalProject.cmake
index d734012acc852116767877aa888ae2c845f2840d..b8499b3cb5440ae51912d1a340f9528d1237635c 100644
--- a/Modules/ExternalProject.cmake
+++ b/Modules/ExternalProject.cmake
@@ -10,66 +10,66 @@
 #
 # ::
 #
-#   ExternalProject_Add(<name>    # Name for custom target
-#     [DEPENDS projects...]       # Targets on which the project depends
-#     [PREFIX dir]                # Root dir for entire project
-#     [LIST_SEPARATOR sep]        # Sep to be replaced by ; in cmd lines
-#     [TMP_DIR dir]               # Directory to store temporary files
-#     [STAMP_DIR dir]             # Directory to store step timestamps
-#    #--Download step--------------
-#     [DOWNLOAD_NAME fname]       # File name to store (if not end of URL)
-#     [DOWNLOAD_DIR dir]          # Directory to store downloaded files
-#     [DOWNLOAD_COMMAND cmd...]   # Command to download source tree
-#     [CVS_REPOSITORY cvsroot]    # CVSROOT of CVS repository
-#     [CVS_MODULE mod]            # Module to checkout from CVS repo
-#     [CVS_TAG tag]               # Tag to checkout from CVS repo
-#     [SVN_REPOSITORY url]        # URL of Subversion repo
-#     [SVN_REVISION rev]          # Revision to checkout from Subversion repo
-#     [SVN_USERNAME john ]        # Username for Subversion checkout and update
-#     [SVN_PASSWORD doe ]         # Password for Subversion checkout and update
-#     [SVN_TRUST_CERT 1 ]         # Trust the Subversion server site certificate
-#     [GIT_REPOSITORY url]        # URL of git repo
-#     [GIT_TAG tag]               # Git branch name, commit id or tag
-#     [HG_REPOSITORY url]         # URL of mercurial repo
-#     [HG_TAG tag]                # Mercurial branch name, commit id or tag
-#     [URL /.../src.tgz]          # Full path or URL of source
-#     [URL_HASH ALGO=value]       # Hash of file at URL
-#     [URL_MD5 md5]               # Equivalent to URL_HASH MD5=md5
-#     [TLS_VERIFY bool]           # Should certificate for https be checked
-#     [TLS_CAINFO file]           # Path to a certificate authority file
-#     [TIMEOUT seconds]           # Time allowed for file download operations
-#    #--Update/Patch step----------
-#     [UPDATE_COMMAND cmd...]     # Source work-tree update command
-#     [PATCH_COMMAND cmd...]      # Command to patch downloaded source
-#    #--Configure step-------------
-#     [SOURCE_DIR dir]            # Source dir to be used for build
-#     [CONFIGURE_COMMAND cmd...]  # Build tree configuration command
-#     [CMAKE_COMMAND /.../cmake]  # Specify alternative cmake executable
-#     [CMAKE_GENERATOR gen]       # Specify generator for native build
-#     [CMAKE_GENERATOR_TOOLSET t] # Generator-specific toolset name
-#     [CMAKE_ARGS args...]        # Arguments to CMake command line
-#     [CMAKE_CACHE_ARGS args...]  # Initial cache arguments, of the form -Dvar:string=on
-#    #--Build step-----------------
-#     [BINARY_DIR dir]            # Specify build dir location
-#     [BUILD_COMMAND cmd...]      # Command to drive the native build
-#     [BUILD_IN_SOURCE 1]         # Use source dir for build dir
-#    #--Install step---------------
-#     [INSTALL_DIR dir]           # Installation prefix
-#     [INSTALL_COMMAND cmd...]    # Command to drive install after build
-#    #--Test step------------------
-#     [TEST_BEFORE_INSTALL 1]     # Add test step executed before install step
-#     [TEST_AFTER_INSTALL 1]      # Add test step executed after install step
-#     [TEST_COMMAND cmd...]       # Command to drive test
-#    #--Output logging-------------
-#     [LOG_DOWNLOAD 1]            # Wrap download in script to log output
-#     [LOG_UPDATE 1]              # Wrap update in script to log output
-#     [LOG_CONFIGURE 1]           # Wrap configure in script to log output
-#     [LOG_BUILD 1]               # Wrap build in script to log output
-#     [LOG_TEST 1]                # Wrap test in script to log output
-#     [LOG_INSTALL 1]             # Wrap install in script to log output
-#    #--Custom targets-------------
-#     [STEP_TARGETS st1 st2 ...]  # Generate custom targets for these steps
-#     )
+#  ExternalProject_Add(<name>    # Name for custom target
+#    [DEPENDS projects...]       # Targets on which the project depends
+#    [PREFIX dir]                # Root dir for entire project
+#    [LIST_SEPARATOR sep]        # Sep to be replaced by ; in cmd lines
+#    [TMP_DIR dir]               # Directory to store temporary files
+#    [STAMP_DIR dir]             # Directory to store step timestamps
+#   #--Download step--------------
+#    [DOWNLOAD_NAME fname]       # File name to store (if not end of URL)
+#    [DOWNLOAD_DIR dir]          # Directory to store downloaded files
+#    [DOWNLOAD_COMMAND cmd...]   # Command to download source tree
+#    [CVS_REPOSITORY cvsroot]    # CVSROOT of CVS repository
+#    [CVS_MODULE mod]            # Module to checkout from CVS repo
+#    [CVS_TAG tag]               # Tag to checkout from CVS repo
+#    [SVN_REPOSITORY url]        # URL of Subversion repo
+#    [SVN_REVISION rev]          # Revision to checkout from Subversion repo
+#    [SVN_USERNAME john ]        # Username for Subversion checkout and update
+#    [SVN_PASSWORD doe ]         # Password for Subversion checkout and update
+#    [SVN_TRUST_CERT 1 ]         # Trust the Subversion server site certificate
+#    [GIT_REPOSITORY url]        # URL of git repo
+#    [GIT_TAG tag]               # Git branch name, commit id or tag
+#    [HG_REPOSITORY url]         # URL of mercurial repo
+#    [HG_TAG tag]                # Mercurial branch name, commit id or tag
+#    [URL /.../src.tgz]          # Full path or URL of source
+#    [URL_HASH ALGO=value]       # Hash of file at URL
+#    [URL_MD5 md5]               # Equivalent to URL_HASH MD5=md5
+#    [TLS_VERIFY bool]           # Should certificate for https be checked
+#    [TLS_CAINFO file]           # Path to a certificate authority file
+#    [TIMEOUT seconds]           # Time allowed for file download operations
+#   #--Update/Patch step----------
+#    [UPDATE_COMMAND cmd...]     # Source work-tree update command
+#    [PATCH_COMMAND cmd...]      # Command to patch downloaded source
+#   #--Configure step-------------
+#    [SOURCE_DIR dir]            # Source dir to be used for build
+#    [CONFIGURE_COMMAND cmd...]  # Build tree configuration command
+#    [CMAKE_COMMAND /.../cmake]  # Specify alternative cmake executable
+#    [CMAKE_GENERATOR gen]       # Specify generator for native build
+#    [CMAKE_GENERATOR_TOOLSET t] # Generator-specific toolset name
+#    [CMAKE_ARGS args...]        # Arguments to CMake command line
+#    [CMAKE_CACHE_ARGS args...]  # Initial cache arguments, of the form -Dvar:string=on
+#   #--Build step-----------------
+#    [BINARY_DIR dir]            # Specify build dir location
+#    [BUILD_COMMAND cmd...]      # Command to drive the native build
+#    [BUILD_IN_SOURCE 1]         # Use source dir for build dir
+#   #--Install step---------------
+#    [INSTALL_DIR dir]           # Installation prefix
+#    [INSTALL_COMMAND cmd...]    # Command to drive install after build
+#   #--Test step------------------
+#    [TEST_BEFORE_INSTALL 1]     # Add test step executed before install step
+#    [TEST_AFTER_INSTALL 1]      # Add test step executed after install step
+#    [TEST_COMMAND cmd...]       # Command to drive test
+#   #--Output logging-------------
+#    [LOG_DOWNLOAD 1]            # Wrap download in script to log output
+#    [LOG_UPDATE 1]              # Wrap update in script to log output
+#    [LOG_CONFIGURE 1]           # Wrap configure in script to log output
+#    [LOG_BUILD 1]               # Wrap build in script to log output
+#    [LOG_TEST 1]                # Wrap test in script to log output
+#    [LOG_INSTALL 1]             # Wrap install in script to log output
+#   #--Custom targets-------------
+#    [STEP_TARGETS st1 st2 ...]  # Generate custom targets for these steps
+#    )
 #
 # The *_DIR options specify directories for the project, with default
 # directories computed as follows.  If the PREFIX option is given to
@@ -113,16 +113,16 @@
 #
 # ::
 #
-#   ExternalProject_Add_Step(<name> <step> # Names of project and custom step
-#     [COMMAND cmd...]        # Command line invoked by this step
-#     [COMMENT "text..."]     # Text printed when step executes
-#     [DEPENDEES steps...]    # Steps on which this step depends
-#     [DEPENDERS steps...]    # Steps that depend on this step
-#     [DEPENDS files...]      # Files on which this step depends
-#     [ALWAYS 1]              # No stamp file, step always runs
-#     [WORKING_DIRECTORY dir] # Working directory for command
-#     [LOG 1]                 # Wrap step in script to log output
-#     )
+#  ExternalProject_Add_Step(<name> <step> # Names of project and custom step
+#    [COMMAND cmd...]        # Command line invoked by this step
+#    [COMMENT "text..."]     # Text printed when step executes
+#    [DEPENDEES steps...]    # Steps on which this step depends
+#    [DEPENDERS steps...]    # Steps that depend on this step
+#    [DEPENDS files...]      # Files on which this step depends
+#    [ALWAYS 1]              # No stamp file, step always runs
+#    [WORKING_DIRECTORY dir] # Working directory for command
+#    [LOG 1]                 # Wrap step in script to log output
+#    )
 #
 # The command line, comment, and working directory of every standard and
 # custom step is processed to replace tokens <SOURCE_DIR>, <BINARY_DIR>,