fix setting OSX DMG background for 10.9.X

tools/osx_packaging/osx_build

@@ -596,7 +596,7 @@ VOLNAME=$APPNAME-$release_version
 
 # TODO use mktemp
 export TMPDIR=`pwd`
-MNTPATH=`mktemp -d -t /ardourimg`
+MNTPATH=`mktemp -d -t ardourimg`
 TMPDMG=`mktemp -t ardour`
 ICNSTMP=`mktemp -t ardouricon`
 EXTRA_SPACE_MB=30
@@ -621,24 +621,33 @@ cp -vi ${DMGBACKGROUND} "${MNTPATH}/.background/dmgbg.png"
 
 echo "setting DMG background ..."
 
-echo '
+if test $(sw_vers -productVersion | cut -d '.' -f 2) -lt 9; then
+	# OSX ..10.8.X
+	DISKNAME=${VOLNAME}
+else
+	# OSX 10.9.X and later
+	DISKNAME=`basename "${MNTPATH}"`
+fi
+
+osascript << EOF
   tell application "Finder"
-     tell disk "'${VOLNAME}'"
+    activate
+    tell disk "${DISKNAME}"
       open
       set current view of container window to icon view
       set toolbar visible of container window to false
       set statusbar visible of container window to false
-           set the bounds of container window to {400, 200, 800, '${DMGWINBOTTOM}'}
+      set the bounds of container window to {400, 200, 800, ${DMGWINBOTTOM}}
       set theViewOptions to the icon view options of container window
       set arrangement of theViewOptions to not arranged
       set icon size of theViewOptions to 64
       set background picture of theViewOptions to file ".background:dmgbg.png"
       make new alias file at container window to POSIX file "/Applications" with properties {name:"Applications"}
-           set position of item "'${APPDIR}'" of container window to {90, 100}
+      set position of item "${APPDIR}" of container window to {90, 100}
       set position of item "Applications" of container window to {310, 100}
-           '${MIXBUSPOS}'
-           '${HARVIDPOS}'
-           '${XJADEOPOS}'
+      ${MIXBUSPOS}
+      ${HARVIDPOS}
+      ${XJADEOPOS}
       close
       open
       update without registering applications
@@ -646,7 +655,7 @@ echo '
       eject
     end tell
   end tell
-' | osascript
+EOF
 
 chmod -Rf go-w "${MNTPATH}"
 sync