Add missing structs and handler in BCryptOpenAlgorithmProvider().
Fixes CORE-16741 and similar problems.
The modern internet is not waiting for ReactOS, needed to keep the RAPPS URLs working.
fix picked from:
0.4.15-dev-3603-g e0a47b7b5f [BCRYPT] Add BCRYPT_ECDSA_P256_ALGORITHM
There is no need to compile our DLLs as shared libraries since we are
managing symbols exports and imports through spec files.
On my system, this reduces the configure-time by a factor of two.
