2018-11-12  Sandra Loosemore  <sandra@codesourcery.com>

	PR preprocessor/47823

	gcc/
	* doc/cpp.texi (Alternatives to Wrapper #ifndef): Move #pragma once
	documentation to...
	(Pragmas): ...here.  
	* doc/extend.texi (Pragmas): Note additional pragmas documented
	in the CPP manual.

From-SVN: r266043