prmi - input nominal parameter values
prms - nominals from saved normal equations
l    - input l-vector (flags, ptrs for adjustable parameters)
n    - size of arrays (if neg. then only flags)
ndif - count of differences in both adjustable and non-adjustable
(free and fixed) parameters
cdf  - control indicators
name1- first name of parameter group (8-char)
name2- second name (6-char)