Android: JNI changes to address potential memory/object leaks. While I haven't done any memory leak testing, while researching how to improve performance, it has come to my attention that I should be releasing various objects. Particularly java string related references. Always call DeleteLocalRef() after NewStringUTF() and... Always call ReleaseStringUTFChars() after GetStringUTFChars().

# Set these here to change the version for all platforms
DW_MAJOR_VERSION=3
DW_MINOR_VERSION=3