Missing link to changes.html for 4.1...

[David Daney]

FYI:

After the 4.1 branch was created there appears to be no way to navigate to:
http://gcc.gnu.org/gcc-4.1/changes.html

from the gcc.gnu.org home page.  Navigation to changes.html for all 
other versions (except 4.1) is possible.

David Daney.