py3: make i18n/posplit use print_function

i18n/posplit

@@ -5,7 +5,7 b''
 # license: MIT/X11/Expat
 #
 
-from __future__ import absolute_import
+from __future__ import absolute_import, print_function
 
 import polib
 import re
@@ -69,8 +69,8 b' if __name__ == "__main__":'
                             continue
                         else:
                             # lines following directly, unexpected
-                            print 'Warning: text follows line with directive' \
-                                  ' %s' % directive
+                            print('Warning: text follows line with directive' \
+                                  ' %s' % directive)
                     comment = 'do not translate: .. %s::' % directive
                     if not newentry.comment:
                         newentry.comment = comment