PR 16329: remote debugging broken on Solaris.

Like on GNU/Linux (linux-thread-db.c), the Solaris solaris-threads
target (handles libthread_db.so) shouldn't be pushed when remote
debugging.

This uses the same predicate used by linux-thread-db.c.

gdb/
2013-12-16  Pedro Alves  <palves@redhat.com>

	PR 16329
	* sol-thread.c (check_for_thread_db): If the target can't run or
	isn't a core, return without pushing.
Range of element index is too large on MIPS MSA element selection instructions.

The element index range for the following MIPS MSA instructions: sldi, splati,
copy_s, copy_u, insert and insve is 1 bit too large.  This patch fixes this issue.

ChangeLog:

	gas/testsuite/gas/mips/
	* msa.s: Reduced maximum element index range for sldi, splati,
	copy_s, copy_u, insert and insve instructions.
	* msa64.s: Likewise.
	* micromips@msa.d: Likewise.
	* micromips@msa64.d: Likewise.
	* msa.d: Likewise.
	* msa64.d: Likewise.

	include/opcode/
	* mips.h: Updated description of +o, +u, +v and +w for MIPS and
	microMIPS.

	opcodes/
	* micromips-opc.c (decode_micromips_operand): Reduced range of +o, +u,
	+v and +w.
	(micromips_opcodes): Reduced element index range for sldi, splati,
	copy_s, copy_u, insert and insve instructions.
	* opcodes/mips-opc.c (decode_mips_operand): Reduced range of +o, +u,
	+v and +w.
	(mips_builtin_opcodes): Reduced element index range for sldi, splati,
	copy_s, copy_u, insert and insve instructions.