Kill a blatantly outdated (and now wrong) comment
Nuke OPENSSL_NONPIC_relocated since nothing uses it.

ok miod@
Make sure SRP_Calc_client_key() returns NULL instead of a pristine BN_new()
upon error; from Florian Zumbiehl (florz , florz . de) on tech@
Make sure srp_Calc_k() digest operations are checked for error; from
Florian Zumbiehl (florz , florz . de) on tech@
Inline the only use of the HEX_SIZE macro and nuke both DECIMAL_SIZE and
HEX_SIZE.

ok beck@ miod@