Added new script to test ipython itself.

scripts/iptest

@@ -0,0 +1,47 b''
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""IPython Test Suite Runner.
+"""
+
+import sys
+import warnings
+
+from nose.core import TestProgram
+import nose.plugins.builtin
+
+from IPython.testing.plugin.ipdoctest import IPythonDoctest
+
+def main():
+    """Run the IPython test suite.
+    """
+
+    warnings.filterwarnings('ignore', 
+        'This will be removed soon.  Use IPython.testing.util instead')
+
+    
+    # construct list of plugins, omitting the existing doctest plugin
+    plugins = [IPythonDoctest()]
+    for p in nose.plugins.builtin.plugins:
+        plug = p()
+        if plug.name == 'doctest':
+            continue
+
+        #print 'adding plugin:',plug.name  # dbg
+        plugins.append(plug)
+
+    argv = sys.argv + ['--doctest-tests','--doctest-extension=txt',
+                       '--with-ipdoctest','--exe']
+
+    has_ip = False
+    for arg in sys.argv:
+        if 'IPython' in arg:
+            has_ip = True
+            break
+
+    if not has_ip:
+        argv.append('IPython')
+
+    TestProgram(argv=argv,plugins=plugins)
+
+if __name__ == '__main__':
+    main()