bonzaiengine-native-*.jar contains Bullet Physics native library bindings.
They are required by the package jouvieje.physics (if you don't use physics,
native jars/files are no needed).

Libraries in armeabi/mips/x86 are for android platform when physics is used.
To support all devices, armeabi/x86/mips must be used.
armeabi-v7a is optional, and is an optimized library for armeabi with support
of v7a instruction set.
Currently most devices are armeabi, and most of them supports v7a.
