Support TLS x32 GD->IE, GD->LE and LD->LE transitions.

Support TLS x32 GD->IE, GD->LE and LD->LE transitions.

bfd/

2011-03-12  H.J. Lu  <hongjiu.lu@intel.com>

	* elf64-x86-64.c (elf_x86_64_check_tls_transition): Supprt TLS
	x32 GD->IE and GD->LE transitions.
	(elf_x86_64_relocate_section): Supprt TLS x32 GD->IE, GD->LE
	and LD->LE transitions.

ld/testsuite/

2011-03-12  H.J. Lu  <hongjiu.lu@intel.com>

	* ld-x86-64/tlsgd4.dd: New.
	* ld-x86-64/tlsgd4.s: Likewise.
	* ld-x86-64/tlsgd5.dd: Likewise.
	* ld-x86-64/tlsgd5a.s: Likewise.
	* ld-x86-64/tlsgd5b.s: Likewise.
	* ld-x86-64/tlsgd6.dd: Likewise.
	* ld-x86-64/tlsgd6a.s: Likewise.
	* ld-x86-64/tlsgd6b.s: Likewise.
	* ld-x86-64/tlsld2.dd: Likewise.
	* ld-x86-64/tlsld2.s: Likewise.

	* ld-x86-64/x86-64.exp (x86_64tests): Add tlsgd4, libtlsgd5.so,
	tlsgd5, libtlsgd6.so, tlsgd6 and tlsld2.