BUG: Automatic pwd/cwd path translation must check that the generated logical-to-physical mapping is correct by using realpath.

ENH: Added versioned executable support.  This partially addresses bug#2143.  Also made OUTPUT_NAME work when installing executables.

ENH: Added -E cmake_symlink_executable command to help create symbolic links for versioned executables.

COMP: Cannot use first/last insertion constructor of std::set because it is not available on all platforms.

ENH: Adding test for auto-object-depends feature.  It has been tested with the Makefile generator.  Hopefully this will work for the Visual Studio and XCode generators.

ENH: added better error checking for cases when there is a CMakeCache.txt file but it is not readable

-G"generator" (legacy format)
-G "generator" (new format)

BUG: Do not convert SOURCE argument from relative to full path.  It breaks the old-style SOURCE==TARGET trick and the SOURCE argument is only present for old-style commands anyway.  This addresses bug#2120.

BUG: When exiting before the configure step in script mode we must account for cmSystemTools::GetErrorOccuredFlag() for the return code.