utils: enable unicode utils build for win64 target

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@23769 3ad0048d-3df7-0310-abae-a5850022a9f2
rtl: enable collations building for win64

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@23770 3ad0048d-3df7-0310-abae-a5850022a9f2