Windows: use BLK_SHA1 again
Windows: use BLK_SHA1 again

Since NO_OPENSSL is no longer defined on Windows, BLK_SHA1 is not defined
anymore implicitly. Define it explicitly.

As a nice side-effect, we no longer link against libcrypto.dll, which has
non-trivial startup costs because it depends on 6 otherwise unneeded
DLLs.

Signed-off-by: Johannes Sixt <fd432345609ae4d58c1aa629cb66ba96d1391622@kdbg.org>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git