Even more cleanups, fix time on certain platforms such as windows, cygwin, and linux. Hopefully we can add entries for other platforms until try_compile works. Also escape certain characters for xml.

ENH: Renamed cmStringStream to cmOStringStream and added cmIStringStream.  Removed cmInputStringStream.

Add configure option and fix potential bug in other targets. Now the run command is actually run with directory, so eventually we should be able to run this from a subdirectory

Fix for run command on windows. If you specify command in quotes but not full path, it should still work