JNI refactoring performed. Cleanup will be done in next commit.
https://github.com/openpeer/opandroid/issues/426
https://github.com/openpeer/opandroid/issues/427
https://github.com/openpeer/opandroid/issues/431
https://github.com/openpeer/opandroid/issues/432
https://github.com/openpeer/opandroid/issues/433
https://github.com/openpeer/opandroid/issues/434
https://github.com/openpeer/opandroid/issues/435
https://github.com/openpeer/opandroid/issues/436
https://github.com/openpeer/opandroid/issues/437
https://github.com/openpeer/opandroid/issues/356
https://github.com/openpeer/opandroid/issues/355
https://github.com/openpeer/opandroid/issues/249