add script to install xdg

tools/install_xdg.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+import glob
+import subprocess
+import os
+import sys
+
+def check_executable(executable):
+    with open('/dev/null', 'w') as devnull:
+        process = subprocess.Popen(['which', executable], stdout=devnull)
+        return_code = process.wait()
+    if return_code == 0:
+        return True
+    else:
+        print >>sys.stderr, 'Error: %s is not installed on your system.' % executable
+        sys.exit(1)
+
+def install_xdg():
+    print 'installing desktop menu files'
+    check_executable('xdg-desktop-menu')
+
+    os.system('xdg-desktop-menu install --novendor desktop/*.desktop')
+    for filepath in glob.glob('icons/*'):
+        print 'installing icon %s' % filepath
+        os.system('xdg-icon-resource install --size 64 --novendor %s' % filepath)
+
+install_xdg()