Fix a Windows problem when the Python executable is in a directory with

a ' ' in its name.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4042359

setuptools/command/easy_install.py

@@ -349,7 +349,7 @@ Please make the appropriate changes for your system and try again.
                     if basename.lower()=='python.exe' and os.path.exists(alt):
                         # use pythonw.exe to avoid opening a console window
                         executable = alt
-        
+                    if ' ' in executable: executable='"%s"' % executable
                 from distutils.spawn import spawn
                 spawn([executable,'-E','-c','pass'],0)