This changes EVP's cipher and digest code to hook via the ENGINE support.

See crypto/engine/README for details.

- it also removes openbsd_hw.c from the build (that functionality is
  going to be available in the openbsd ENGINE in a upcoming commit)

- evp_test has had the extra initialisation added so it will use (if
  possible) any ENGINEs supporting the algorithms required.

crypto/evp/openbsd_hw.c

@@ -52,6 +52,12 @@
 #include <openssl/rsa.h>
 #include "evp_locl.h"
 
+/* This stuff should now all be supported through
+ * crypto/engine/hw_openbsd_dev_crypto.c unless I botched it up */
+static void *dummy=&dummy;
+
+#if 0
+
 /* check flag after OpenSSL headers to ensure make depend works */
 #ifdef OPENSSL_OPENBSD_DEV_CRYPTO
 
@@ -437,3 +443,4 @@ const EVP_MD *EVP_dev_crypto_md5(void)
     { return &md5_md; }
 
 #endif
+#endif