Create ~/Activities only when necessary

tools/build-snapshot.sh

@@ -1,6 +1,6 @@
 VERSION=0.63
 DATE=`date +%Y%m%d`
-RELEASE=2.53
+RELEASE=2.55
 TARBALL=sugar-$VERSION-$RELEASE.${DATE}git.tar.bz2
 
 rm sugar-$VERSION.tar.bz2

tools/sugar-install-bundle

@@ -28,6 +28,8 @@ proxy_obj = bus.get_object(DBUS_SERVICE, DBUS_PATH)
 dbus_service = dbus.Interface(proxy_obj, DBUS_SERVICE)
 
 bundle_dir = env.get_user_activities_path()
+if not os.path.isdir(bundle_dir):
+    os.mkdir(bundle_dir)
 
 zip_file = zipfile.ZipFile(sys.argv[1])
 file_names = zip_file.namelist()