Build against system lz4 shared lib, rather than bundling code

[jonathanunderwood]

I am trying to package python-lz4 for the Fedora distribution - it is under review at [1]. Currently the biggest barrier to acceptance is that python-lz4 bundles the lz4 code, rather than building against a system shared library. Is there any good reason for this, or would you consider dropping the bundling of lz4 and linking against the system version?

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1236319