* doc/gcc.texi: Move several chapters out to ...
	* doc/configterms.texi, doc/fragments.texi, doc/hostconfig.texi,
	doc/include/linux-and-gnu.texi, doc/interface.texi,
	doc/makefile.texi, doc/passes.texi, doc/portability.texi:
	... here.  New files.
	* doc/gcc.texi, doc/contrib.texi: Move section headings into
	contrib.texi.
	* Makefile.in ($(docdir)/gcc.info, gcc.dvi): Update dependencies.

From-SVN: r46951