jni_mosaic: disable ISOC++11 support

Summary:
This also reverts commit acec7eee01e9162fbc6169248ba07eae07d5de1f.

A few tricky issues with clang that we can get to later.

Test Plan: verify

Reviewers: randall.rushing, synergy

Reviewed By: synergy

Differential Revision: http://review.codefirex.com/D583