[APPLIED][Lucid][pull request] Update to 2.6.32.20

[Brad Figg]

https://bugs.launchpad.net/bugs/622882

SRU Justification

Impact:
   The upstream process for stable tree updates is quite similar
   in scope to the Ubuntu SRU process, e.g., each patch has to
   demonstrably fix a bug, and each patch is vetted by upstream
   by originating either directly from Linus' tree or in a minimally
   backported form of that patch. The 2.6.32.20 upstream stable
   patch set is now available. It should be included in the Ubuntu
   kernel as well.

   http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.20
   http://kernel.org/pub/linux/kernel/v2.6/patch-2.6.32.20.bz2

TEST CASE: TBD

   The following 3 patches are in the 2.6.32.20 stable release:

   * Linux 2.6.32.20
   * mm: fix up some user-visible effects of the stack guard page
   * mm: fix page table unmap for stack guard page properly

-- 
Brad Figg brad.figg at canonical.com http://www.canonical.com