gcc_update: Add gcc/gcc.1 to generated files.

contrib:
	* gcc_update: Add gcc/gcc.1 to generated files.
	* texi2pod.pl: Handle @r and @gccoptlist.  Handle @gol.  Handle
	discarding to end of sentence with @xref where the sentence has an
	interior "." in markup, and handle discarding parentheses around
	such a sentence.

gcc:
	* Makefile.in (generated-manpages): Add gcc.1
	($(srcdir)/gcc.1): New target.
	(maintainer-clean): Delete $(srcdir)/gcc.1.
	* gcc.texi: Add macros @gccoptlist and @gol.
	* invoke.texi: Include option summary in manpage.  Mark up option
	summary with @gccoptlist and @gol.  Use @r in one place where
	appropriate.
	* texinfo.tex: Update to version 2000-12-11.07 from ftp.gnu.org.
	* gcc.1: Generate from invoke.texi.

gcc/cp:
	* g++.1: Change to be ".so man1/gcc.1".

From-SVN: r38993