- Split IMPORTED_LINK_LIBRARIES into two parts:
      IMPORTED_LINK_INTERFACE_LIBRARIES
      IMPORTED_LINK_DEPENDENT_LIBRARIES
  - Add CMAKE_DEPENDENT_SHARED_LIBRARY_MODE to select behavior
  - Set mode to LINK for Darwin (fixes universal binary problem)
  - Update ExportImport test to account for changes

ENH: Add target property LINK_SEARCH_END_STATIC to help people building static binaries on some platforms.

BUG: Move decision to switch library paths found in implicit link directories to use -l options from cmFindLibraryCommand to cmComputeLinkInformation.  Existing projects may depend on find_library returning a full path.  This slightly weakens cmComputeLinkInformation but is necessary for compatibility.

ENH: Update cmInstallTargetGenerator to get the shared libraries linked by a target from cmComputeLinkInformation instead of duplicating the computation.

ENH: Add cmTarget::GetLinkInformation method to allow several places in the generators to share link information while only computing it once per configuration for a target.  Use it to simplify the chrpath feature.

  - Imported frameworks have the FRAMEWORK property set
  - Added cmTarget::IsFrameworkOnApple method to simplify checks
  - Also remove separate IMPORTED_ENABLE_EXPORTS property and just use ENABLE_EXPORTS since, like FRAMEWORK, it just represents the target type.
  - Document FRAMEWORK keyword in INSTALL command.
  - Updated IMPORTED_LOCATION property documentation for Frameworks

  - Created cmExportFileGenerator hierarchy to implement export file generation
  - Installed exports use per-config import files loaded by a central one.
  - Include soname of shared libraries in import information
  - Renamed PREFIX to NAMESPACE in INSTALL(EXPORT) and EXPORT() commands
  - Move addition of CMAKE_INSTALL_PREFIX to destinations to install generators
  - Import files compute the installation prefix relative to their location when loaded
  - Add mapping of importer configurations to importee configurations
  - Rename IMPORT targets to IMPORTED targets to distinguish from windows import libraries
  - Scope IMPORTED targets within directories to isolate them
  - Place all properties created by import files in the IMPORTED namespace
  - Document INSTALL(EXPORT) and EXPORT() commands.
  - Document IMPORTED signature of add_executable and add_library
  - Enable finding of imported targets in cmComputeLinkDepends

  - This will be useful for imported library dependencies
  - Replaces old cmTarget analyze-lib-depends stuff for linking
  - Formalizes graph construction and dump
  - Explicitly represents dependency inferral sets
  - Use BFS of initial dependencies to preserve order

  - Work-around bug in Watcom command line parsing for spaces in paths.
  - Add 'library' option before libraries specified by file path.

BUG: Be less aggressive about finding conflicts in the runtime path when the real soname is not known.

BUG: When a library file name is linked without a path make sure the link type is restored after the -l option.

  - This is purely an implementation improvement.  No interface has changed.
  - Create cmComputeLinkInformation class
  - Move and re-implement logic from:
      cmLocalGenerator::ComputeLinkInformation
      cmOrderLinkDirectories
  - Link libraries to targets with their full path (if it is known)
  - Dirs specified with link_directories command still added with -L
  - Make link type specific to library names without paths
    (name libfoo.a without path becomes -Wl,-Bstatic -lfoo)
  - Make directory ordering specific to a runtime path computation feature
    (look for conflicting SONAMEs instead of library names)
  - Implement proper rpath support on HP-UX and AIX.