Adjust file name blacklist in patch.py

- allow the percent sign ('%')
- disallow characters from Windows blacklist https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247.aspx#naming_conventions

BUG=467152

Review URL: https://codereview.chromium.org/1035193002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@294591 0039d316-1c4b-4281-b951-d872f2087c98

patch.py

@@ -50,7 +50,7 @@ class FilePatchBase(object):
   def _process_filename(filename):
     filename = filename.replace('\\', '/')
     # Blacklist a few characters for simplicity.
-    for i in ('%', '$', '..', '\'', '"'):
+    for i in ('$', '..', '\'', '"', '<', '>', ':', '|', '?', '*'):
       if i in filename:
         raise UnsupportedPatchFormat(
             filename, 'Can\'t use \'%s\' in filename.' % i)