S/390: Fix instruction format of crj*, clrj*, and clgrj*.

S/390: Fix instruction format of crj*, clrj*, and clgrj*.

This fixes the instruction format for 3 of the compare and branch
extended mnemonics.  That way the extended mnemonics are actually
being found by objdump.

gas/testsuite/ChangeLog:

2015-09-10  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gas/s390/zarch-z10.d: Fix testcase for some of the compare and
	branch extended mnemonics.

opcodes/ChangeLog:

2015-09-10  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* s390-opc.txt: Fix instruction format of crj*, clrj*, and clgrj*.