(NELEMS): New macro.
(RECURSION_DEPTH): Fix definition: loadup() allocates 93 local regs, not 95.
(spill_func_t): Make it return an "int".
(DCL): Adjust accordingly.
(verbose): New variable.
(nerrors): Make it an "int".
(unwind_count): Ditto.
(unwind_and_resume): Make it return an int. Print info-output only if verbose is
set. After unwinding to the desired point, redirect IP to
resumption_point_label and store return value in EH_ARG0 and original
IP in EH_ARG1.
(run_check): New function.
(main): Remove open test code and call run_check() instead.
(Logical change 1.49)
