m.e.ash   nov 1969    subroutine nrmsav
save normal equations onto disk if so indicated
scale the coefficient matrix and right side of the normal eqs
option with nsize.ne.nparam used only for call from
pprctl, not used for saving ne
iaprio - if >0, must combine imbedded a priori info from imat0(.).
otherwise, just copy from ibuf2
iptr - array of pointers for restoring a priori info