2017-01-08  Sandra Loosemore  <sandra@codesourcery.com>

	PR other/16519

	gcc/
	* doc/invoke.texi (Option Summary): Move -pthread to Linker Options
	and Preprocessor Options.
	(Options for Linking): Document -pthread here....
	(RS/6000 and PowerPC Options): ...not here.
	(Solaris 2 Options): ...or here.
	* doc/cppopts.texi: Document -pthread.

From-SVN: r244214