libs: update nfs library to 0.7.1

fixes IO on 'dot' files.
fixes misbehavior in reboot recovery

Changelog for nfs4j-0.7.0..nfs4j-0.7.1
    * [eb6adf4] vfs: chimera: let inode to call setStat()
    * [d5b5a52] nfs4: implement missing RECLAIM_COMPLETE
    * [f361946] nfs4: fix open CLAIM_PREVIOUS
    * [a6d7c13] pom: enforce  maven-release-plugin 2.4.2

Acked-by: Albert Rossi
Target: master, 2.7

Require-book: no
Require-notes: yes
(cherry picked from commit dfeaa7c3fe5f984e8a3a364d5e4a3d78c3bc4497)
Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Merge pull request #389 from kofemann/fix-nfs-2.7

libs: update nfs library to 0.7.1