re PR preprocessor/54124 (GCC 4.7.1 manual: -dM and similar options hard to find)

re PR preprocessor/54124 (GCC 4.7.1 manual:  -dM and similar options hard to find)

2017-01-07  Sandra Loosemore  <sandra@codesourcery.com>

	PR preprocessor/54124

	gcc/
	* doc/cppopts.texi: Reformat -d subtable to list the full name
	of the options.  Add cross-reference to the docs for the general
	compiler -d options.
	* doc/invoke.texi (Developer Options): Add cross-reference to the
	preprocessor-specific -d option documentation.

From-SVN: r244205