* Source/CFRuntime.c: Handle NULL pointer correctly.
* Source/CFString.c: Switch to using GSUnicodeFormatWithArguments.
* Source/CFStringFormat.c: Deleted.  New formatting facilities available.
* Source/GSUnicode.c: Fixed many bugs found by test suite.
* Tests/CFString/format.m: Deleted.
* Tests/CFString/format_int.m: Integer only tests.
* Tests/CFString/format_misc.m: Miscellaneous tests, including string, character and pointer.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/corebase/trunk@38097 72102866-910b-0410-8b05-ffd578937521