Unlike Solaris/SPARC, the __sighndlr function isn't recognized as part
of a signal handler, causing a couple of testcases to fail.

The following patch fixes that.  A followup patch will move this to
common code to avoid such unnecessary discrepancies between
Solaris/SPARC and x86 in the future.

While this fixes a couple of backtraces to now correctly print

#1  <signal handler called>

they often fail later with

#2  0x0ff3ffffff00857f in ?? ()
Backtrace stopped: Cannot access memory at address 0xff3000002e0886f

which needs further investigation.

Tested on amd64-pc-solaris2.11 (running the tests with both -m64 and
-m32).  Ok for master?

	Rainer

-- 
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Rainer Orth, Center for Biotechnology, Bielefeld University


2018-06-13  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* amd64-sol2-tdep.c (amd64_sol2_sigtramp_p): Also recognize
	__sighndlr.
	* i386-sol2-tdep.c (i386_sol2_sigtramp_p): Likewise.