Ignore .svn folders when building the war

svn folders are build with the wars, causing the following error (on windows):

~
~ Packaging
~ ---------
~ Packaging current version of the framework and the application to c:
\users\arnaud\appdata\local\temp\flashSca.war ...
Traceback (most recent call last):
  File "D:\Developer\Play\1.1\play", line 1490, in <module>
    execfile(commands)
  File "D:\Developer\Play\1.1\modules\gae-1.0.2\commands.py", line 65,
in <module>
    package_as_war(war_path, None)
  File "D:\Developer\Play\1.1\play", line 849, in package_as_war
    if os.path.exists(war_path): shutil.rmtree(war_path)
  File "D:\Developer\Play\1.1\python\lib\shutil.py", line 169, in
rmtree
    rmtree(fullname, ignore_errors, onerror)
  File "D:\Developer\Play\1.1\python\lib\shutil.py", line 169, in
rmtree
    rmtree(fullname, ignore_errors, onerror)
  File "D:\Developer\Play\1.1\python\lib\shutil.py", line 169, in
rmtree
    rmtree(fullname, ignore_errors, onerror)
  File "D:\Developer\Play\1.1\python\lib\shutil.py", line 174, in
rmtree
    onerror(os.remove, fullname, sys.exc_info())
  File "D:\Developer\Play\1.1\python\lib\shutil.py", line 172, in
rmtree
    os.remove(fullname)
WindowsError: [Error 5] AccÞs refus: 'c:\\users\\arnaud\\appdata\\local
\\temp\\flashSca.war\\WEB-INF\\application\\.svn\\dir-prop-base'

The solution is to ignore .svn folders when copy application to destination dir before building the war.
Maybe on ligne 864 in play python script

There is a new feature in python 2.6 to ignore foders during copytree but Play use 2.5 ... Is it difficult to migrate to 2.6 ?
shutil.ignore_patterns(*patterns)
This factory function creates a function that can be used as a callable for copytree()‘s ignore argument, ignoring files and directories that match one of the glob-style patterns provided. See the example below.