The GOST engine file was "libgost_engine.so".  Unfortunately, this
will fail to load with any OpenSSL version, as the derived engine ID
will be "gost_engine" (OpenSSL <1.1.0) or "libgost_engine" (OpenSSL
>=1.1.0), since the engine checks the ID internally against "gost".

To make the IDs compatible, make sure the file name will be "gost.so"

The GOST engine is a dynamically loadable module rather than a shared
library, so make that explicit.  However, the programs gost12sum,
gostsum and gostsum12 need to link against the algorithms implemented
as part of the engine, so separate those out into a static library
that both programs and engine link with.

Conflicts:
	gost_asn1.c
	gost_crypt.c

Fix grasshopper-ctr memory corruption

Fix missing cleanup of GOST specific error messages

Fix getting asn1 params

The function EVP_CIPHER_get_asn1_iv(), which is the default
get_asn1_params implementation, can be used to set the "original IV".
No need to reach into the inside of EVP_CIPHER_CTX, which makes it
much more future proof.