GUITESTS: Run only existing tests with the script.

Improve the runner script to run only tests whose binary file
exists. Tests with inexistant binary file are not counted into
test counts in the summary.

Add the MIT license header. I'm now maintaining this script in
external repository with MIT license. So I can use the script
in other projects too.

gui/test/runtests.py

@@ -1,6 +1,28 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
+# The MIT License
+#
+# Copyright (c) 2011 Kimmo Varis <kimmov@gmail.com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
 '''Runs all the GUI tests in subdirectories.'''
 
 import os
@@ -93,6 +115,7 @@ class TestList:
                     target = os.path.join(path, target)
                     targetfound = True
 
+                    if os.path.exists(target):
                         testinfo = Test()
                         testinfo.profile = relpath
                         testinfo.binary = target