MIPS64: Adjust cfi* testcases.

MIPS64: Adjust cfi* testcases.

The CFI* testcases fail on MIPS64 because the augmentation string does
not match the regexp. This is because MIPS64 doesn't use the default of
4 for DWARF2_FDE_RELOC_SIZE which ends up as "b" in the augmentation
string. MIPS64 uses the address size which is 8 resulting in "c".

Adding c to the regexp fixes a couple of them. Others also need
adjustments in the FDE header lines due to different
sizes/offsets.

gas/ChangeLog:

2016-10-10  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* testsuite/gas/cfi/cfi-common-1.d: Adjust regexps for mips64.
	* testsuite/gas/cfi/cfi-common-2.d: Likewise.
	* testsuite/gas/cfi/cfi-common-3.d: Likewise.
	* testsuite/gas/cfi/cfi-common-4.d: Likewise.
	* testsuite/gas/cfi/cfi-common-5.d: Likewise.
	* testsuite/gas/cfi/cfi-common-7.d: Likewise.
	* testsuite/gas/cfi/cfi-common-8.d: Likewise.
	* testsuite/gas/cfi/cfi-common-9.d: Likewise.
	* testsuite/gas/cfi/cfi-mips-1.d: Likewise.