Changes

Recoded a loop within the mono flux limiter so that it's written
in a more convenient manner to allow for easier coding for
generalized gridding.

Results are bit-for-bit.

Changed some variable names so that it is clear that, while they contain
the word wpxp_, they are actually thermodynamic-level variables.

Results are bit-for-bit.

Within the mono flux limiter, a thermodynamic-level variable needed to
be interpolated to momentum levels so it could be directly compared
to wpxp.

The results of this change are BIT_CHANGING for the ARM 97, MC3E,
and TWP-ICE cases.

I forgot to add the new variable to the Atlantic Coast Conference
statements in the previous commit.