configopts.html, [...]: Remove many EGCS references...

	* docs/configopts.html, docs/install.html, docs/17_intro/BADNAMES,
	docs/17_intro/howto.html, docs/18_support/howto.html,
	docs/19_diagnostics/howto.html, docs/20_util/howto.html,
	docs/21_strings/howto.html, docs/22_locale/howto.html,
	docs/23_containers/howto.html, docs/24_iterators/howto.html,
	docs/25_algorithms/howto.html, docs/26_numerics/howto.html,
	docs/27_io/howto.html, docs/ext/howto.html, docs/faq/index.html:
	Remove many EGCS references; use current absolute URLs on
	gcc.gnu.org or sources.redhat.com for messages in list archives.
	* docs/faq/index.txt: Regenerate.

From-SVN: r36988