am dc2e5208: Merge "Do not release the wifi lock if the screen is off." into gingerbread

Merge commit 'dc2e5208e2b448a2c481d726818de79ea6a49783' into gingerbread-plus-aosp

* commit 'dc2e5208e2b448a2c481d726818de79ea6a49783':
  Do not release the wifi lock if the screen is off.