Quite a number of tests FAIL on Solaris due to a mismatch between
expected and received messages: the testsuite expects something like

	Program received signal SIGABRT, Aborted.

while on Solaris it gets

	Thread 2 received signal SIGABRT, Aborted.

For a simple testcase, info threads shows

(gdb) info threads 
  Id   Target Id         Frame 
  1    LWP    1          main () at /vol/src/gnu/gdb/doc/bugs/ua.c:5
* 2    Thread 1 (LWP 1)  main () at /vol/src/gnu/gdb/doc/bugs/ua.c:5

I suspect this is due to support for the old pre-Solaris 9 MxN thread
model where user level threads were mapped to a different set of lwps.

For the moment, I'm dealing with this by allowing both forms of the
message in the testsuite.  The patch is almost completely mechanical,
with the exception of gdb.base/sigbpt.exp where the introduction of a
new group in the RE required adjustments in the $expect_out indices.

Tested on sparcv9-sun-solaris2.11, x86_64-pc-solaris2.11, and
x86_64-pc-linux-gnu.  Ok for master?

	Rainer

-- 
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University


2018-11-22  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* gdb.arch/aarch64-sighandler-regs.exp,
	gdb.arch/amd64-i386-address.exp, gdb.arch/i386-gnu-cfi.exp,
	gdb.arch/i386-mpx-call.exp, gdb.arch/i386-mpx-sigsegv.exp,
	gdb.arch/i386-mpx-simple_segv.exp, gdb.arch/i386-prologue.exp,
	gdb.arch/i386-size-overlap.exp, gdb.arch/i386-size.exp,
	gdb.arch/i386-sse-stack-align.exp, gdb.arch/i386-unwind.exp,
	gdb.arch/powerpc-stackless.exp, gdb.arch/s390-stackless.exp,
	gdb.arch/s390-tdbregs.exp, gdb.arch/s390-vregs.exp,
	gdb.arch/sparc64-adi.exp, gdb.base/auxv.exp,
	gdb.base/bp-cmds-continue-ctrl-c.exp, gdb.base/bp-permanent.exp,
	gdb.base/call-signal-resume.exp, gdb.base/ending-run.exp,
	gdb.base/exitsignal.exp, gdb.base/interrupt-noterm.exp,
	gdb.base/interrupt.exp, gdb.base/jit-reader.exp,
	gdb.base/kill-after-signal.exp, gdb.base/random-signal.exp,
	gdb.base/range-stepping.exp, gdb.base/relativedebug.exp,
	gdb.base/sigall.exp, gdb.base/sigbpt.exp,
	gdb.base/siginfo-addr.exp, gdb.base/siginfo-infcall.exp,
	gdb.base/siginfo-obj.exp, gdb.base/signest.exp,
	gdb.base/signull.exp, gdb.base/sigstep.exp, gdb.btrace/segv.exp,
	gdb.reverse/sigall-precsave.exp, gdb.reverse/sigall-reverse.exp,
	gdb.server/reconnect-ctrl-c.exp, gdb.server/solib-list.exp,
	gdb.trace/trace-condition.exp: Allow for Thread N received signal
	message.
	* gdb.base/sigbpt.exp: Adjust $expect_out indices.