snappy-java doesn't build its JNI bindings. SnappyNative.cpp should be
compiled as a libsnappyjava.so shared library and installed in a
libsnappy-java package. The missing maxCompressedLength method reported
by Oliver is actually defined in SnappyNative.cpp.
I'll prepare an update with these changes. Any objection to move the Git
repository under pkg-java?
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