S/390: Implement instruction set extensions

S/390: Implement instruction set extensions

opcodes/ChangeLog:

2019-01-31  Andreas Krebbel  <krebbel@linux.ibm.com>

	Backport from mainline
	2019-01-31  Andreas Krebbel  <krebbel@linux.ibm.com>

	* s390-mkopc.c (main): Accept arch13 as cpu string.
	* s390-opc.c: Add new instruction formats and instruction opcode
	masks.
	* s390-opc.txt: Add new arch13 instructions.

include/ChangeLog:

2019-01-31  Andreas Krebbel  <krebbel@linux.ibm.com>

	Backport from mainline
	2019-01-31  Andreas Krebbel  <krebbel@linux.ibm.com>

	* opcode/s390.h (enum s390_opcode_cpu_val): Add
	S390_OPCODE_ARCH13.

gas/ChangeLog:

2019-01-31  Andreas Krebbel  <krebbel@linux.ibm.com>

	Backport from mainline
	2019-01-31  Andreas Krebbel  <krebbel@linux.ibm.com>

	* config/tc-s390.c (s390_parse_cpu): New entry for arch13.
	* doc/c-s390.texi: Document arch13 march option.
	* testsuite/gas/s390/s390.exp: Run the arch13 related tests.
	* testsuite/gas/s390/zarch-arch13.d: New test.
	* testsuite/gas/s390/zarch-arch13.s: New test.
	* testsuite/gas/s390/zarch-z13.d: Expect the renamed mnemonics
	also for z13.