tweaks to osx_build to (a) warn about expected error (b) remove harvid/jadeo stuff from osascript (c) fix tmpfile template

tools/osx_packaging/osx_build

@@ -606,7 +606,7 @@ 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
@@ -647,8 +647,6 @@ echo '
            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}'
            close
            open
            update without registering applications
@@ -658,6 +656,7 @@ echo '
    end tell
 ' | osascript
 
+echo "The next chmod will fail on a file named \".fseventsd\". This is not an error. You can safely ignore it."
 chmod -Rf go-w "${MNTPATH}"
 sync