Calculate ARM arch attribute after relaxation

Calculate ARM arch attribute after relaxation

gas/
2014-11-21  Terry Guo  <terry.guo@arm.com>

	* config/tc-arm.c (md_assemble): Do not consider relaxation.
	(md_convert_frag): Test and set target arch attribute accordingly.
	(aeabi_set_attribute_string): Turn it into a global function.
	* config/tc-arm.h (md_post_relax_hook): Enable it for ARM target.
	(aeabi_set_public_attributes): Declare it.

gas/testsuite/
2014-11-21  Terry Guo  <terry.guo@arm.com>

	* gas/arm/attr-arch-assumption.d: New file.
	* gas/arm/attr-arch-assumption.s: Likewise.

ld/testsuite/
2014-11-21  Terry Guo  <terry.guo@arm.com>

	* ld-arm/tls-longplt-lib.s: Require ARMv6T2.
	* ld-arm/tls-longplt.s: Likewise.
	* ld-arm/tls-longplt-lib.d: Updated.
	* ld-arm/tls-longplt.d: Likewise.