2620: GEPS 031: Python 3 support - 3.2

This does patch updates Gramps to the 3.2 syntax, it does not yet mean Gramps works with python 3.2
Expect next day commits to fix further issues, but this is the main 2to3 tool created patch changed
where needed to have python 2.7 work. 
Specific issues might be:
  1. next has been changed, must be checked
  2. new division as on the wiki page listed is to do
  3. ...


svn: r20634

gramps/gen/plug/docgen/graphdoc.py

@@ -31,8 +31,13 @@
 # python modules
 #
 #------------------------------------------------------------------------
+from __future__ import unicode_literals
 import os
-from cStringIO import StringIO
+import sys
+if sys.version_info[0] < 3:
+    from StringIO import StringIO
+else:
+    from io import StringIO
 import tempfile
 from subprocess import Popen, PIPE
 import sys
@@ -66,10 +71,10 @@ _FONTS = [ { 'name' : _("Default"),                   'value' : ""          },
            { 'name' : _("PostScript / Helvetica"),    'value' : "Helvetica" },
            { 'name' : _("TrueType / FreeSans"),       'value' : "FreeSans"  }  ]
 
-_RANKDIR = [ { 'name' : _(u"Vertical (↓)"),      'value' : "TB" },
-             { 'name' : _(u"Vertical (↑)"),      'value' : "BT" },
-             { 'name' : _(u"Horizontal (→)"),    'value' : "LR" },
-             { 'name' : _(u"Horizontal (←)"),    'value' : "RL" } ]
+_RANKDIR = [ { 'name' : _("Vertical (↓)"),      'value' : "TB" },
+             { 'name' : _("Vertical (↑)"),      'value' : "BT" },
+             { 'name' : _("Horizontal (→)"),    'value' : "LR" },
+             { 'name' : _("Horizontal (←)"),    'value' : "RL" } ]
 
 _PAGEDIR = [ { 'name' : _("Bottom, left"),                  'value' :"BL" },
              { 'name' : _("Bottom, right"),                 'value' :"BR" },
@@ -455,7 +460,7 @@ class GVDocBase(BaseDoc, GVDoc):
         """
         if self.note:
             # build up the label
-            label = u''
+            label = ''
             for line in self.note:  # for every line in the note...
                 line = line.strip() # ...strip whitespace from this line...
                 if line != '':      # ...and if we still have a line...