Fix memory leak in SurfaceFlinger.

Call native_window_api_disconnect to free the memory used by OMX video decoder.
Or, there is memory leak in SurfaceFlinger after a stream playback is stopped.
CurlFile: add implementation of base virtual function GetContent()
Merge pull request #3533 from Karlson2k/curlfile_update_05

CurlFile: add implementation of base virtual function GetContent()
Merge pull request #3428 from oceanheart99/issue/3428

Memory leak when playing stream with xbmc in android platform
FIX: [droid] wrong path in gdb.setup
Merge pull request #3547 from koying/quickpr

FIX: [droid] wrong path in gdb.setup