Adds a test to make sure encoder parms get to decoder.

This is meant as a framework for testing that encode parms make it
through to the decoder.

Change-Id: Idb86ee3668b45b4e73c23c6e4daef94b0650b786
vp9_dx_iface.c uses CONFIG_VP9_POSTPROC but config.h not included

Change-Id: Id316b3786214bf1028992968955da917e3f2d4a3
Merge "Adds a test to make sure encoder parms get to decoder."
Merge "vp9_dx_iface.c uses CONFIG_VP9_POSTPROC but config.h not included"