Add script to build and run Phoenix

The script builds phoenix, then runs it with bochs.

The script needs to be be tweaked with slightly better comments regarding the
useOW/setowenv.sh/etc script. It may also be necessary to configure bochs with a
config file, but that is not a certainty.
Add argument to `find -exec` statements.

Some shells treat their first argument specially. Pass a placeholder argument to
the sub-shells launched by `find`.

Make comments more succinct and apropos.