Add docs and arch tests to BMI.

Add docs and arch tests to BMI.

gas/
2011-01-07  Quentin Neill  <[email protected]>

	* config/tc-i386.c (cpu_arch): Add CPU_BMI_FLAGS.

	* doc/c-i386.texi (i386-BMI): New section.

gas/testsuite/
2011-01-07  Quentin Neill  <[email protected]>

	* gas/i386/arch-10.s: Add a BMI instruction.
	* gas/i386/x86-64-arch-2.s: Likewise.
	* gas/i386/arch-10.d: Add bmi flag and BMI instruction pattern.
	* gas/i386/x86-64-arch-2.d: Likewise.
	* gas/i386/arch-10-1.l: Add BMI instruction pattern.
	* gas/i386/arch-10-2.l: Likewise.
	* gas/i386/arch-10-3.l: Likewise.
	* gas/i386/arch-10-4.l: Likewise.