Description: obtain output format information even if it's a unicode string

Index: matplotlib-1.0.1/lib/matplotlib/sphinxext/plot_directive.py
===================================================================
--- matplotlib-1.0.1.orig/lib/matplotlib/sphinxext/plot_directive.py	2011-01-06 14:48:13.000000000 +0100
+++ matplotlib-1.0.1/lib/matplotlib/sphinxext/plot_directive.py	2011-01-13 23:50:58.838682411 +0100
@@ -346,7 +346,7 @@
         del options['nofigs']
 
     formats = setup.config.plot_formats
-    if type(formats) == str:
+    if isinstance(formats, basestring):
         formats = eval(formats)
 
     fname = os.path.basename(plot_path)