added backward compatibility symbols for libqc-opt.so

Summary: This is needed in find5 camera. We also had it in jb-devel builds.

Test Plan: better than a shared lib stub ;D

Reviewers: synergy, randall.rushing, raymanfx, donald.munn, anders3408

Reviewed By: anders3408

Differential Revision: http://review.codefirex.com/D198