AI 143697: am: CL 143669 am: CL 143495 Add more accented letters to the character picker.

  The hardware keyboard doesn't have all the accents needed for
  Czech and Polish, so round out the selection.
  Original author: enf
  Merged from: //branches/cupcake/...
  Original author: android-build
  Merged from: //branches/donutburger/...

Automated import of CL 143697