2014-08-19  Yaakov Selkowitz  <yselkowi@redhat.com>

	* config.gcc (*-*-cygwin*): Use __cxa_atexit by default.
	(extra_options): Add i386/cygwin.opt.
	* config/i386/cygwin.h (STARTFILE_SPEC): Use crtbeginS.o if shared.
	(CPP_SPEC): Accept -pthread.
	(LINK_SPEC): Ditto.
	(GOMP_SELF_SPECS): Update comment.
	* config/i386/cygwin.opt: New file for -pthread flag.

From-SVN: r214161