add genericcache version setting to TomahawkSettings, check for the cache versions in TomahawkCache/InfossystemCache and delete cache if it is old
use existing TomahawkUtils function to remove directory
typo in Qt5 syntax in Infosystem/TomahawkCache
change DEFINES to c++ constants, remove qt5 ifdefs inside Generic/InfosystemCache and let TomahawkUtils handle the version check
Merge pull request #251 from tomahawk-player/cacheupdates

add genericcache version setting to TomahawkSettings, check for the cach...