[MiNT] GCC 4.6.0

[Vincent Rivière <vincent.riviere@freesbee.fr>]

Hello.

GCC 4.6.0 has just been released, and I have prepared a MiNT patch. Actually 
the previous patch just applies fine.

But when compiling the MiNTLib for ColdFire, I have hit the following bug:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47612

Since the previous GCC 4.5.2 has worked flawlessly, I prefer to wait for 
that regression to be fixed before updating my cross-tools to GCC 4.6.0.

--
Vincent Rivière