Some Python 3 specific fixes, the need for which were brought to my attention by the updated tests in a565ebf26610e9eecd0a2603ac428f056ed7afbd
Some Python 3 specific fixes, the need for which were brought to my attention by the updated tests in a565ebf26610e9eecd0a2603ac428f056ed7afbd

git-svn-id: 5305e2c1a78737cf7dd5f8f44e9bbbd00348fde7@2436 ed100bfc-0583-0410-97f2-c26b58777a21

spacetelescope/PyFITS,spacetelescope/PyFITS,embray/PyFITS,embray/PyFITS,embray/PyFITS,embray/PyFITS