configure: Make Qt 5.0 the minimum requirement
configure: Update configure.diff for Qt 5.0 change
libtorc-core: Remove Qt4 code from TorcLanguage
libtorc-core: Remove Qt4 code from TorcHTTPService
libtorc-core: Remove Qt4 code from TorcHTTPRequest
libtorc-core: Remove Qt4 code from TorcHTTPServer
libtorc-core: Remove more Qt4 code from TorcHTTPServer
libtorc-core: Remove Qt4 code from TorcMime
libtorc-core: Remove stray .o file
libtorc-core: Remove old Qt4 mime files
libtorc-audio: Remove Qt4 code from TorcRAOPBuffer
libtorc-audio: Remove Qt4 code from TorcRAOPDevice
torc-client: Remove Qt4 code
libtorc-baseui: Remove Qt4 code from uidisplay-osx