BUG: Update ITK to fix linux packaging of itkhdf5_cpp library

This patch addresses the issue reported in [1], [2] and [3] by
updating ITK to include InsightSoftwareConsortium/ITK@2a07831 and
by installing the ITK component "cpplibraries" to ensure hdf5_cpp
get packaged in Slicer.

Co-authored-by: Jean-Christophe Fillion-Robin <jchris.fillionr@kitware.com>

[1] http://www.na-mic.org/Bug/view.php?id=4301
[2] http://www.na-mic.org/Bug/view.php?id=4302
[3] https://issues.itk.org/jira/browse/ITK-3504

From: Francois Budin <francois.budin@gmail.com>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@25631 3bd1e089-480b-0410-8dfb-8563597acbee