[WP-34s] Add radix in show digits of x display

[Jonathan Cameron]

I had a request for a version of the flash image for the 30b with libraries and crystal support, so I've put together several different versions at (sorry no IR versions):

http://jmcameron.net/WP-34s/downloads/

I've been testing this on the WP-34s (HP 30b) hardware as well as the Linux Qt Emulator and it seems to work okay as far as i can tell.

I encourage others to test it and let me know how it works for you---especially if you encounter oddities.

-Jonathan