PowerPC TLS tests

PowerPC TLS tests

This patch adds some --no-tls-optimize tests and performs some of the
existing dynamic tests with tls markers in order to catch any
regression in PLT counting.

	* testsuite/ld-powerpc/tlsexe.r: Adjust for added TLSMARK symbol.
	* testsuite/ld-powerpc/tlsexe32.r: Likewise.
	* testsuite/ld-powerpc/tlsso.r: Likewise.
	* testsuite/ld-powerpc/tlsso32.r: Likewise.
	* testsuite/ld-powerpc/tls32no.d,
	* testsuite/ld-powerpc/tls32no.g: New test files.
	* testsuite/ld-powerpc/tlsexe32no.d,
	* testsuite/ld-powerpc/tlsexe32no.g,
	* testsuite/ld-powerpc/tlsexe32no.r: New test files.
	* testsuite/ld-powerpc/tlsexeno.d,
	* testsuite/ld-powerpc/tlsexeno.g,
	* testsuite/ld-powerpc/tlsexeno.r: New test files.
	* testsuite/ld-powerpc/tlsexetocno.d,
	* testsuite/ld-powerpc/tlsexetocno.g: New test files.
	* testsuite/ld-powerpc/tlsno.d,
	* testsuite/ld-powerpc/tlsno.g: New test files.
	* testsuite/ld-powerpc/tlstocno.d,
	* testsuite/ld-powerpc/tlstocno.g: New test files.
	* testsuite/ld-powerpc/powerpc.exp: Run new tests.