Song: cleanup and coding style improvements
Song: revert accidental change
OpulenZ: changed some __inline functions to "static inline",
	which is more in line with later C dialects
Merge pull request #549 from softrabbit/stable-1.0

OpulenZ: code improvements (C99 compatibility)
Added Apple specific artwork
Added Apple specific packaging/installation scripts
Added Apple specific compile options
Omit OpulenZ plugin directory on Apple
Added isnan(), etc declarations for Apple
Clang comp. fix, out.real()+= syntax error
Fix #include <QtXml> on Apple/MacPorts
Change to single-line echos for Info.plist
Added custom target, build and src variables
Replaced SET(LIBRARY_PATH) with LINK_DIRECTORIES
Echo comment to drag/drop dmg script to terminal
Update create_apple_dmg.sh
Force white QLabels per #527

#527
Merge pull request #554 from tresf/stable-1.0

OSX Mavericks Support
Merge remote-tracking branch 'upstream/stable-1.0' into stable-1.0