[RFC] porting to gcc-4.3 docs

[Joe Buck]

On Tue, Jan 08, 2008 at 06:41:37PM -0600, Benjamin Kosnik proposes:
> http://gcc.gnu.org/gcc-4.3/changes.html
> 
> would be joined by
> 
> http://gcc.gnu.org/gcc-4.3/porting_to.html
> 
> This would imply that the porting document would be checked in to
> wwwdocs and available to all the usual GCC contributors to edit and
> update.

Fine with me; it should be linked from the "Caveats" section of
gcc-4.3/changes.html.

> Thoughts and comments?

Saw one error:

-----------------------------
Another preprocessor warning change is for trailing whitespace after and #endif, code like:

#ifdef TEST
#endif TEST
-----------------------------

s/trailing whitespace after and/extra tokens after an/

It's, of course, legal to have trailing whitespace and comments after
an #endif.