DiskLruCache: Add getValueCount

Change-Id: Ie36374af05c9bc2d8d0cbda8ec545b9cb3400469
Merge remote-tracking branch 'koush/master' into cm-10.2
AsyncSocketMiddleware: limit concurrent http connections.

Change-Id: If85d9ab4fa285d5a52f118dfcf50f83e28d3b671
Merge branch 'master' of https://github.com/koush/AndroidAsync

# By Koushik Dutta
# Via Koushik Dutta
* 'master' of https://github.com/koush/AndroidAsync:
  AsyncSocketMiddleware: limit concurrent http connections.
  DiskLruCache: Add getValueCount