Porting some private scripts to python3

For amusement, I poked through my private ~/home/bin directory for 45 minutes. I deleted a bunch of old scripts, mostly ones I used when writing the Python "What's New" documents that would print and summarize the commits since a given tag (for both CVS and SVN!). Some of the scripts that I still use were ported to Python 3; so far they've all been trivial except for the print statements.