subckt.c, cleanup `doit()', drop redundant test
subckt.c, cleanup `doit()', rename some variables
subckt.c, cleanup `doit()', rename some variables
subckt.c, cleanup `doit()', polish
subckt.c, doit(), fix an ancient memory leak when use_numparams == FALSE
subckt.c, cleanup `doit()'
subckt.c, cleanup `doit()'