Provide time/_time32/_time64 for all msvcrt versions through .def files

Remove time/_time32 .c replacements

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5715 4407c894-4637-0410-b4f5-ada5f102cad1
Convert WithProps to Prop, prefer getProp to has_key + getProp, and add some setProp steps to simplify creating the upload command

git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5716 4407c894-4637-0410-b4f5-ada5f102cad1