core/jni: Disable strict aliasing unless told otherwise for now.

I just want this stuff to compile now at this point.

Looking at this with a fresh perspective later is probably for the best.

Thanks so much to @MWisBest for this commit : https://github.com/MWisBest/android_frameworks_base/commit/6db82c5b95937648a5983486b9b810b7004b004a