inpcom.c, rewrite bizarre code in inp_get_params()
inpcom.c, drop unused artifacts
inpcom.c, inp_fix_inst_calls_for_numparam(), avoid excess tfree() invocations
inpcom.c, inp_fix_inst_calls_for_numparam(), local scope for some vars
inpcom.c, inp_fix_inst_calls_for_numparam() rewrite for cleanup
ifeval.c, IFeval(), pronounce definite end of instructions flow
avoid multiple declarations of controlled_exit(), add 'noreturn' attribute