get rid of 'U' in mode flag for gzipped files.

svn path=/trunk/matplotlib/; revision=6852

Author: Jeff Whitaker

lib/matplotlib/cbook.py

@@ -311,8 +311,8 @@ def to_filehandle(fname, flag='rU', return_opened=False):
     if is_string_like(fname):
         if fname.endswith('.gz'):
             import gzip
-            # universal newline mode doesn't work for gzipped files.
-            if flag == 'rU': flag = 'r'
+            # get rid of 'U' in flag for gzipped files.
+            flag = flag.replace('U','')
             fh = gzip.open(fname, flag)
         else:
             fh = file(fname, flag)