gcc.texi: Define macro gcctabopt.

gcc.texi: Define macro gcctabopt.

gcc:
	* gcc.texi: Define macro gcctabopt.
	* invoke.texi: Add manpage sections BUGS and AUTHOR.  Use
	@command, @env and @option in some places where appropriate.  Use
	@gcctabopt where appropriate.  Put URLs and email addresses inside
	@w.

contrib:
	* texi2pod.pl: Handle @gcctabopt and @env in tables.  Handle
	@command.  Format URLs and email addresses in bold.

From-SVN: r38863