correct libstdc++ to libgomp dependencies

[Benjamin Kosnik]

This changes libgomp to be configured before libstdc++. By doing this,
libstdc++ can tell with clarity if optional libgomp dependencies
should be supported.

best,
benjamin

tested x86/linux
tested x86/linux --disable-libgomp
tested x86/darwin
tested x86/darwin --enable-libgomp
-------------- next part --------------
A non-text attachment was scrubbed...
Name: p.20070918-2
Type: application/octet-stream
Size: 1399 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20070918/60568979/attachment.obj>