Merge pull request #11 from pratid/feature/init_scripts

Add init.d script for Ubuntu
Fix CppUnit detection & libdir setup by configure, and fix Nagios libraries for unittests
Merge pull request #12 from pratid/bug/cppunit_detection

Fix CppUnit detection & libdir setup by configure, and fix Nagios libraries for unittests
Add init script for CentOS/RedHat and fix minor issues in Ubuntu version