Merge pull request #6 from radai-rosenblatt/master

add toString() impl to Stat, ignore maven/IDE artifacts
nfs: introduce InetAddressMatcher

a Predicate to validate ip addresses validates.
Update FsExport to have an InetAddressMatcher per entry.
This allows to keep and re-use pre-compiled regexp matcher.

Remove old IpMatcher.

Acked-by: Karsten Schwank
Target: master
more elegant human readable size calculation for Stat