Heads up: mingw32-gcc bumped to gcc 4.7 in rawhide

[Thomas Sailer]

I've fixed mingw32-glibmm24 and mingw32-boost.

> The only package which I've found (to date) that doesn't build anymore
> with gcc 4.7 is mingw32-boost. It seems to bail out because of a lack of
> thread support but I haven't been able to pinpoint the exact cause yet.

If you're interested why, see
https://svn.boost.org/trac/boost/ticket/6165

The reason is that c++config.h no longer defines
_GLIBCXX_HAVE_GTHR_DEFAULT

I haven't fixed mingw32-qt yet, it fails exactly the same way as native
qt, so I intend to "wait that one out".

Tom