Add support for platforms without fnmatch.

This uses gnulib so you will need to have a copy in order
to run autogen.sh (but not to build from a tarball). Either
arrange for gnulib-tool to be in your path or set the
environment variable GNULIB_TOOL to point to its location.

.deps

/Makefile.am

/alloca.c

/alloca.in.h

/dummy.c

/fnmatch.c

/fnmatch.in.h

/fnmatch_loop.c

/stdbool.in.h

/wchar.in.h

/wctype.in.h