submit/tizen/20151207.043145

-Fix svace defect
-Added wav support to mediamuxer
-Sync with 2.4 [Modified the test app to split GStreamer based code into a new file]
-Added 3gp support to muxer
    Enhanced the test-suite to support multiple-container-formats.
    With current change, exiting formats (mp4) works with newly added encoded-media(h263) too.
    Addressed review comments
-Fix memory leaks in muxer [Sync with 2.4]