Simple programmable RPN calculator.

Update Description:

v3.2:

- Faster easter egg :-)

v3.0:

- Infixed arithmetic expression evaluation form added.

v2.7:

- Reorganized the buttons in the view/quickscript/script/function forms.

- Changed the 'run'/'debug'/'compile and run' buttons color to make them readable on a monochrome devices.

- Added the 'extern_call' keyword to call extern functions defined in an 'o3external.prc' shared lib (type 'slib', creator 'OOOC').

- See o3external sample. Fixed the scripts that had been altered by some milicious text editor :-/

v2.6:

- Now can compile (byte code) and run scripts faster.

- Fixed a little display problem.

v2.4:

- Bug fix in double precision display fix (again :-/)

- Nested function definitions support

- Cool plotting script samples.

v2.0:

- Full debugging support, boot script, new 'run

v1.7:

- Scripts and function calls added to history.

- Lookup field in scripts/functions/history lists.

- A few more tips and some new scripts to help users write their own RPN scripts.