Handle alternate values for hero poly'd into a 'strongmonst' form
more thoroughly by propagating max values other than 18/100 to the
attribute manipulation routines.
ATTRMAX(A_STR), which used to be a relatively simple expression, now
contains a function call.
Along the way, change the races[] terminator's value for 'mnum' from
0 (giant ant) to NON_PM.
I did my best to exempt some of the bigger aligned blocks from the reformatting
using the /* clang-format off */ and /* clang-format on */ tags. Probably some
that shouldn't have been formatted were anyway; if you encounter them, please
fix.
The clang-format tags were left in on the basis that it's much easier to prune
those out later than to put them back in, and it means that, modulo my custom
version of clang-format, I should be able to run clang-format on the source tree
again without changing anything, now that Pat has fixed the VA_DECL issues.