message: Update app name for MAC
diff: @@ -25,7 +25,7 @@ BITCOIN_WIN_INSTALLER=$(PACKAGE)-$(PACKAGE_VERSION)-win$(WINDOWS_BITS)-setup$(EX
  empty :=
  space := $(empty) $(empty)
  -OSX_APP=Bitcoin-Qt.app
  +OSX_APP=Qtum-Qt.app
  OSX_VOLNAME = $(subst $(space),-,$(PACKAGE_NAME))
  OSX_DMG = $(OSX_VOLNAME).dmg
  OSX_BACKGROUND_SVG=background.svg
  