Ports tagging and branching

[Joseph S. Myers]

I propose that:

* ports should be tagged for 2.10.2 (tag glibc-2.10.2) at the current 
revision of release/2.10/master.

* ports should be tagged for 2.11 (tag glibc-2.11), and branched for 2.11 
branch (release/2.11/master), at the current revision of master.

* Further fixes for alpha, hppa and m68k required for those targets to 
work be allowed to be cherry-picked to 2.11 branch even if they add new 
symbols or otherwise would not be suitable for release branches for 
targets already working on those branches (but if we reach 2.12 
branchpoint without those targets having been made to work, such changes 
should not go on 2.11 for them after that point).

-- 
Joseph S. Myers
joseph@codesourcery.com