I am looking for a good scripting language to link to my program.
I am looking for 2 important attributes:

Scripting language should be hard linked into the executable (not requiring 3rd party 
installations). This is important to me to simplify distribution.
Scripting should allow some run-time debugging option (When running a script inside my program I would like to easily run it inside a debugger while it is running in the context of my program)

Can python,lua or some other language supply me with this?
I'll add Tcl to the mix. It's designed to be easily embedded into other programs.
Scripting Languages