x86: Do not dump DS/CS segment overrides for branch hints

x86: Do not dump DS/CS segment overrides for branch hints

I've made all labels normal labels so that there's no confusion between
the different targets which is which and I match them in the .d files
with .* as Alan suggested.

Hex offsets I match with [0-9a-fx]+ since some targets prefix them with
0x, some don't, etc.

	* testsuite/gas/i386/align-branch-9.s: Don't use labels that are
	automatically local for ELF targets.
	* testsuite/gas/i386/branch.s: Likewise.
	* testsuite/gas/i386/x86-64-align-branch-9.s: Likewise.
	* testsuite/gas/i386/x86-64-branch.s: Likewise.
	* testsuite/gas/i386/align-branch-9.d: Adjust to match more targets.
	* testsuite/gas/i386/branch.d: Likewise.
	* testsuite/gas/i386/ilp32/x86-64-branch.d: Likewise.
	* testsuite/gas/i386/x86-64-align-branch-9.d: Likewise.
	* testsuite/gas/i386/x86-64-branch.d: Likewise.