Herein some notes on modifying Soltherm, related to modifying Chim, to extend
   the mixing enthalpy/final T calculation capability from 600 to 1000C.

MOST IMPORTANTLY - We simply replaced the old enthalpy table to 600C, with the new table
   to 1000C. We find that Demo #3, the fluid-fluid mixing starting file, produces
   exactly the same result with either version.

********** Soltherm issues found along the way and in need of fixing ***********

12 Dec 2005: we added integer variable chgflg (chgf in CHIMRUN.) If chgf = 1.0,
     it allows use of charge imbalanced minerals in soltherm and minox, and
     forces fluid charge balance at every step, allowing use of charged fake
     mineral buffers. Causes and extra call to CADJUST ~2700.
     If chgf.ne.1 then normal operation.

Current minox entries for titrating H+, showing also HCl for comparison
HX                       1.01  1     1.000  1
HCl                     36.46  2     1.000  1    1.000  3

Missing Soltherm entries for buffering (from the current version), need to add
HX         1.e-30 1  1.000 1
HX       -12.995 -12.271 -11.255 -10.631 -10.284 -10.167  -10.3  -10.828
HX       -6.9524E+00  2.0297E-02 -9.0109E-05  2.2482E-07 -2.7762E-10      1.e+30
HX-0.5     1.e-30 1  1.000 1
HX-0.5   -12.995 -12.271 -11.255 -10.631 -10.284 -10.167  -10.3  -10.828
HX-0.5   -6.9524E+00  2.0297E-02 -9.0109E-05  2.2482E-07 -2.7762E-10      1.e+30
HX-0.0     1.e-30 1  1.000 1
HX-0.0   -13.995 -13.271 -12.255 -11.631 -11.284 -11.167  -1.300 -11.828
HX-0.0   -.14904E+02  .40608E-01 -.18038E-03  .45024E-06 -.55602E-09
______________

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