gthr-gnat.c: Remove.

gthr-gnat.c: Remove.

	gcc:
	* gthr-gnat.c: Remove.
	* gthr-gnat.h: Remove.
	* Makefile.in (LIB2ADDEH): Remove $(srcdir)/gthr-gnat.c.
	* config/t-freebsd (LIB2ADDEH): Likewise.
	* config/t-linux (LIB2ADDEH): Likewise.
	* config/t-sol2 (LIB2ADDEH): Likewise.
	* config/ia64/t-vms (LIB2ADDEH): Likewise.
	* configure.ac (target_thread_file): Remove gnat handling.
	* configure: Regenerate.
	* doc/install.texi (Configuration, --enable-threads): Remove gnat.

	gcc/po:
	* EXCLUDES: Remove gthr-gnat.c, gthr-gnat.h.

	libgcc:
	* config/s390/t-tpf (LIB2ADDEH): Remove $(gcc_srcdir)/gthr-gnat.c.

From-SVN: r174064