Default paths that are searched for presence of directory are always present
Pull out separate classes for XDG based icon lookup and fallback searches
Update NEWS and ChangeLog
mjwm doesn't belong to 'Utility' section under Puppy Linux
Deprecate --summary option in favour of --verbose/-v
--summary short is invalid

Existing behaviour

--summary normal maps to a normal run
--summary long maps to a verbose run (--verbose or -v)

--summary short is an invalid option