Apply patch for CVE-2014-1878, taken from icinga.

Bump PKGREVISION.
Updated net/nagios-base to 3.5.1nb1
Update devel/p5-Devel-ebug to 0.55.

Changes from previous:
----------------------
0.55 2013.03.19
     - Extra version to add missing files :)

0.54 2013.03.19
     - Add 'break on file loading' feature (thanks jchassler!)
     - Fix commands starting with ^h

0.53 2012.02.29
     - Add tests for codeline tracking and subrefs
     - Fix YAML vs YAML::Syck (dunno)
     - Had to disable return-value-override feature
     - Fix tests to work with new Carp
     - Use findbin to load backend
     - Improve argument param handling

0.52 2011.11.08
     - Oops, forgot to update CHANGES for 0.51 :)
     - Slight refactor of backend executable by pmurias (thanks!)
     - Extract backend connection code into separate method
     - Shuffle executables into bin/
     - Fix wantarray test for older perls
     - Fix some windows path usage

0.50 Thu Oct 20 20:15:05 EDT 2011
     - Fix failing tests
     - Add YAML build dependency
Updated devel/p5-Devel-ebug to 0.55.
Fix compatibility with fontsproto-2.1.3 and depend on it.
Bump PKGREVISION.
Updated x11/libXfont to 1.4.7nb1