camera_compatibility_layer.cpp: don't explicitly release frames

Release is not necessarily implemented in some devices, so don't
explicitly release the frames to avoid possible crashes (manta). Also
abandon texture only on disconnect.

Patch by: Guenter Schwann <guenter.schwann@canonical.com>
Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
compat: camera: make use of native buffer allocator instead of SF

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
test_camera.c: adding a default input area for the input stack

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
camera: adding pkg-config file

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
Merge pull request #177 from rsalveti/sync-ubuntu-camera

Camera: use native buffer, don't explicitly release frames and adding pkg-config file