invoke.texi: Document -mTLS.

invoke.texi: Document -mTLS.

	* doc/invoke.texi: Document -mTLS.

	* testsuite/gcc.target/frv/all-tls-global-dynamic.c: New.
	* testsuite/gcc.target/frv/all-tls-initial-exec.c: New.
	* testsuite/gcc.target/frv/all-tls-initial-exec-pic.c: New.
	* testsuite/gcc.target/frv/all-tls-local-dynamic.c: New.
	* testsuite/gcc.target/frv/all-tls-local-dynamic-plt.c: New.
	* testsuite/gcc.target/frv/all-tls-local-dynamic-plt-pic.c: New.
	* testsuite/gcc.target/frv/all-tls-local-exec.c: New.
	* testsuite/gcc.target/frv/all-tls-local-exec-TLS.c: New.

	* configure.ac: Check for a TLS capable gas.

	* configure: Regenerate.

From-SVN: r94283