Smaller lzo indexes: make #43 apply to current codebase

[dvryaboy]

Make smaller lzo indexes by encoding the offsets instead of just writing them down naively.

Note this does not address any of @rangadi's comments from 2 years ago on #43, this is just bringing the PR up to a point where it can be applied to the mavenized build.

[dvryaboy]

ugh MacOS is fighting git on file capitalization.. one sec.

[dvryaboy]

Ok the test failures appear unrelated:

SEVERE: Could not load native gpl library

java.lang.UnsatisfiedLinkError: no gplcompression in java.library.path

The new tests actually pass.

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