rewrite model_bin_match(), rename --> model_name_match()
inpgmod.c, INPgetModBin(), use model_name_match()
tests/regression/model/binning-1.cir, check model binning
spicenum.c, shrink scope of some hash pointers
xpressn.c, rename `define()' --> `nupa_define()'
xpressn.c, split `dicostack()' into `dicostack_push()' and `dicostack_pop()'
xpressn.c, reorder `dicostack_pop()'
xpressn.c, whitespace
numparam, use `local_symbols[0]' instead of `global_symbols'
numparam, rename `local_symbols' --> `symbols'
numparam, combine `symbols[0]' with `symbols[>0]' processing
numparam, cleanup `symbols' reallocation