[libstdc++, 3.3] Doc merge from mainline

[Phil Edwards]

As foretold by the prophecy.


2003-04-29  Phil Edwards  <pme@gcc.gnu.org>

	Bulk documentation merge (copy) from trunk.
	* docs/doxygen/Intro.3, docs/doxygen/TODO, docs/doxygen/mainpage.html, 
	docs/doxygen/run_doxygen, docs/doxygen/user.cfg.in, 
	docs/html/configopts.html, docs/html/debug.html, 
	docs/html/documentation.html, docs/html/explanations.html, 
	docs/html/install.html, docs/html/17_intro/howto.html, 
	docs/html/17_intro/porting.html, docs/html/18_support/howto.html, 
	docs/html/19_diagnostics/howto.html, docs/html/27_io/howto.html, 
	docs/html/ext/howto.html, docs/html/ext/sgiexts.html, 
	docs/html/faq/index.html, docs/html/faq/index.txt:
	Merge from trunk.