refactoring : remove unused code.

Signed-off-by: Kim <Kulling>
update : implement bind of private render class OGLVertexDescription.

Signed-off-by: Kim <Kulling>
feature : add jpg-lib.

Signed-off-by: Kim <Kulling>
feature : add atomicint.

Signed-off-by: Kim <Kulling>
update : fix missing licence info.

Signed-off-by: Kim <Kulling>
- update      : add task group class as a sync point.
- refactoring : rename ITaks to AsyncTask.

Signed-off-by: Kim <Kulling>