Export sqstd_aux_printerror() for usage in sq.c.
Support arbitrary builtin static modules in interpreter.

If EXTRA_STATIC_MODULES is defined, init_static_modules() function will be
called during initialization, which is expected to be in a seprate source
file and call each module's initialization routine.
If there was error initializing static modules, report it to user before exit.
Pass script name as the first param to a script, as most Unix tools do.
Add TODO note about SQSharedState::GetScratchPad().
Add script to calculate size of a binary built with different options.
Add README for a fork.