Produced error message for unsupported curves in fips_ecdhvs.c

return value after custom flag was rightly reverted [from HEAD].

an induced error checking function.

PR: 2633

PR: 2636
Submitted by: Charles Bryant

Fix many memory leaks in algorithm test utilities.

DRBG before reinitialising it.

of all fips test utilities in a single binary and some minimal script
parsing for platforms lacking a suitable shell.

In order to keep changes to the build system to a minimum it #includes all
the utilities C source files (yuck).

Submitted by: emmanuel.azencot@bull.net
Reviewed by: steve

Return -1 immediately if not affine coordinates as BN_CTX has not been
set up.

2_0-stable'.

around sub-shell limitation.