PinyinIME jni: build without ISOC++11 support

Summary: A few tricky issues with clang, want to fix properly later

Test Plan: verify

Reviewers: randall.rushing, synergy

Reviewed By: synergy

Differential Revision: http://review.codefirex.com/D584

Change-Id: Ie79f8fe037442d0225d7bc587cc8fd51a686daac