patches to be merged into gcc-3_1-branch

[Loren James Rittle]

> 2002-05-15  Loren J. Rittle <ljrittle@acm.org>
>
>	libstdc++/6641
>	* include/bits/c++config (__USE_MALLOC): Report case where
>	the user improperly defined it on the command line.

Moved to gcc-3_1-branch.