(fnmatch): Pass NULL as last argument to internal_fn{,w}match.
* posix/fnmatch_loop.c (struct STRUCT): New type.
(FCT): Add ends argument. If ends != NULL and normal * is
seen in the pattern, store current pattern and string pointers
and return. Adjust recursive calls.
(EXT): Adjust FCT callers.
(STRUCT): Undef at the end of the file.
* posix/Makefile (tests): Add tst-fnmatch2.
* posix/tst-fnmatch2.c: New test.