Changing the GCC defaults to 4.9 for the remaining architectures (sh4, x32, powerpcspe, m68k)

[Matthias Klose <doko@debian.org>]

Hi,

I'll change the default GCC to 4.9 with a gcc-defaults upload next week for the
remaining architectures, then updating the build-essential package to require
GCC 4.9.

  Matthias