icinga.spec: add transitional icinga-idoutils pkg, fix rpmlint errors/warnings

+* Fri Feb 15 2013 Michael Friedrich <michael.friedrich@netways.de> -
1.8.4-4
+- fix rpmlint errors/warnings
+
+* Wed Feb 06 2013 Michael Friedrich <michael.friedrich@netways.de> -
1.8.4-3
+- add idoutils as transitional package (thx Stefan Marx, Michael
Grüner)