Log Message:
Add a dependency on py-curses, otherwise pygrub fails to boot in guests
with

Traceback (most recent call last):
  File "/usr/pkg/bin/pygrub", line 22, in <module>
    import curses, _curses, curses.wrapper, curses.textpad, curses.ascii
  File "/usr/pkg/lib/python2.7/curses/__init__.py", line 15, in \ 
<module>
    from _curses import *
ImportError: No module named _curses

bump pkgrevision