BUGFIX: Return OMX_ErrorNotImplemented from stubs

The specification tells us to do so, and the Android OMX handling is
actually dependent on this working properly...

Signed-off-by: Ithamar R. Adema <ithamar@upgrade-android.com>
BUGFIX: make sure we call dlclose() on error

If a opened dynamic library fails to initialize, make sure it
also gets closed properly. We might run out of filehandles
otherwise.

Signed-off-by: Ithamar R. Adema <ithamar@upgrade-android.com>
BUGFIX: Mark us as compatible with OpenMAX IL 1.0

We're based on 1.0, and Android expects us to be 1.0, so
don't advertise like we're better then that.

Signed-off-by: Ithamar R. Adema <ithamar@upgrade-android.com>
Android: If we are building for Android, use ALOG*

Signed-off-by: Ithamar R. Adema <ithamar@upgrade-android.com>