gas tests for the sparc instructions ldfsr, stfsr, ldx, ldxa, stx, stxa, ldxfsr,...

gas tests for the sparc instructions ldfsr, stfsr, ldx, ldxa, stx, stxa, ldxfsr, stxfsr, ldxefsr.

- V8 instructions:  ldfsr, stfsr
- V9 instructions:  ldx, ldxa, stx, stxa, ldxfsr, stxfsr
- V9b instructions: ldxefsr

Tested on sparc64-*-linux-gnu.

[gas/testsuite/Changelog]

2014-08-25  Jose E. Marchesi  <jose.marchesi@oracle.com>

	* gas/sparc/ldx_stx.s: New file.
	* gas/sparc/ldx_stx.d: Likewise.

	* gas/sparc/ldx_efsr.s: New file.
	* gas/sparc/ldx_efsr.d: Likewise.

	* gas/sparc/ld_st_fsr.s: New file.
	* gas/sparc/ld_st_fsr.d: Likewise.

	* gas/sparc/sparc.exp: Run the tests ldx_stx, ldx_efsr and
	ld_st_fsr.