How install gcc with deb

[Ralf Mardorf]

PS:

If Oliver, Robert, Tom or Ralf would upgrade gcc by this thumb drive
approach it would be ok, but if somebody needs to sent a request to a
mailing list in the first place, I tend to recommend against doing such
an upgrade, just for the "you never know how incomplete the request
already is" reason.

At least we should mention, to backup the install (not just /home)
before upgrading gcc this way.