BUG: Most of time when asking if file exists, we actually want to read it... Should fix Bug #809 - FIND_INCLUDE should check readability

BUG: fix for 301 CMAKE_LIBRARY_PATH and CMAKE_INCLUDE_PATH env vars now used in FIND_LIBRARY and FIND_PATH in addtion to and before PATH

BUG: Like cygwin, mingw does not produce .lib file for shared libraries, so search for dll when searching for library

ENH: On Cygwin shared libraries have only .dll file no .lib file, so when finding library on cygwin, search also for .dll. Also fix SimpleInstall test on cygwin

BUG: CopyFileIfDifferent should return success if the files did not differ or if the copy succeeded.  It should return failure only if the files were different and the copy failed.

BUG: CollapseFullPath was calling SplitProgramPath before changing the working directory to in_base.

ENH: Split kwsys_std into kwsys_ios and kwsys_stl in order to avoid std namespace pollution and support more platforms.

ENH: add the unix makefile generator as an option from the windows GUI, this builds with mingw, cygwin, and combinations of make cl, bcc32

ENH: Added use of KWSYS_HEADER macro in c and cxx files to include kwsys headers through their configured namespace.

ENH: Add optional argument to GetLineFromStream which can let the caller know whether there was a new line character at the end of the line that was just read

ENH: Added wrappers around the std stream headers to make them look like ansi streams on all platforms.