Neater command-line arguments

The command-line arguments for demos/tranny have changed a bit. There is no
longer a -orthography switch; instead various options are append to the name of
the srclang and dstlang. This is far more flexible because you can now say:
english:american, english:yorkshire, japanese:nokanji, japanese:kyouiku=4
etc.

I added a Kanji or two as well.