Please update the gcc default to gcc-4.6 on Alpha

[Michael Cree <mcree@orcon.net.nz>]

Matthias,

Gcc-4.6 has been built for at least a couple of months on Alpha and with
all the other architectures defaulting to gcc-4.6 maybe it is time Alpha
did so too.  There are some packages that FTBFS on Alpha (most notably
gnustep-base) because the package assumes that gcc-4.6 features are
available and that's becoming a bit of a hindrance.  The next time you
upload gcc-defaults would you please make gcc-4.6 the default on Alpha,
thanks.

Cheers
Michael.