am 460b60c9: Revert "temporarily disable the use of glTexImage2D for sw buffers on sholes."

Merge commit '460b60c9b064ef02e9eaf56ecf2f266fd7c4089c' into eclair-mr2

* commit '460b60c9b064ef02e9eaf56ecf2f266fd7c4089c':
  Revert "temporarily disable the use of glTexImage2D for sw buffers on sholes."