Adapt Solaris 12 references

Adapt Solaris 12 references

	libgo:
	Backport from mainline

libgo: adapt Solaris 12 references

    With the change in the Solaris release model (no more major releases
    like Solaris 12 but only minor ones like 11.4), the Solaris 12
    references in GCC need to be adapted.

    Patch by Rainer Orth.

    Reviewed-on: https://go-review.googlesource.com/77490

	libgcc:
	Backport from mainline
	2017-11-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* config.host (*-*-solaris2*): Adapt comment for Solaris 12
	renaming.
	* config/sol2/crtpg.c (__start_crt_compiler): Likewise.
	* configure.ac (libgcc_cv_solaris_crts): Likewise.
	* configure: Regenerate.

	gcc:
	Backport from mainline
	2017-11-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* config.gcc (*-*-solaris2*): Enable default_use_cxa_atexit since
	Solaris 11.  Update comment.
	* configure.ac (gcc_cv_ld_pid): Adapt comment for Solaris 12
	renaming.
	* config/sol2.h (STARTFILE_SPEC): Likewise.
	* configure: Regenerate.

	gcc/testsuite:
	Backport from mainline
	2017-11-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* lib/target-supports.exp (check_effective_target_pie): Adapt
	comment for Solaris 12 renaming.

	* gcc.dg/torture/pr60092.c: Remove *-*-solaris2.11* dg-xfail-run-if.

From-SVN: r254995