Removed unnecessary change based on comments.

Now using android utils lib.
collada_to_a3d seems to work with android util libs.
Integrating old changelist
Changing assert to rsAssrt in VertexArray
making context compile.
Change-Id: I33890defa777f09253bfab630d97782359ec49d7

Added serialization code to rsLib
Integrated old changelist
Change-Id: Ie4746113f6d1817fbb3264f97fdddde25b779311

Added serialization code to rsLib

Change-Id: Ie4746113f6d1817fbb3264f97fdddde25b779311