accordingly.

two extra insructions in sqradd loop at line #503.

over 0.9.8 is up to 3x on USI&II cores and up to 80% - on USIII&IV.

factor" in inner loops.

doesn't give performance improvement.

afford to relax SPARCV9/8+ compiler command line and produce "unversal"
binaries as we used to.

Engage run-time switch between bn_mul_mont_fpu and bn_mul_mont_int.

have impact on performance, because amount of multiplications does not
increase with this switch, not on sparcv9 that is. On the contrary, it
actually improves performance, because it spares a load of instructions
used to chase carries. Not to mention that BN assembler modules can be
shared more freely between 32- and 64-bit builts.

bn_sub_words to the rest of the sparcv8plus.S.

baffled why it crashes and does it sporadically...

integrated yet, but it's tested and benchmarked [see commentary section
for further details].