Change all calls to low level digest routines in the library and

applications to use EVP. Add missing calls to HMAC_cleanup() and
don't assume HMAC_CTX can be copied using memcpy().

Note: this is almost identical to the patch submitted to openssl-dev
by Verdon Walker <VWalker@novell.com> except some redundant
EVP_add_digest_()/EVP_cleanup() calls were removed and some changes
made to avoid compiler warnings.

crypto/rc4/rc4.c

@@ -162,7 +162,7 @@ bad:
 		keystr=buf;
 		}
 
-	MD5((unsigned char *)keystr,(unsigned long)strlen(keystr),md);
+	EVP_Digest((unsigned char *)keystr,(unsigned long)strlen(keystr),md,NULL,EVP_md5());
 	memset(keystr,0,strlen(keystr));
 	RC4_set_key(&key,MD5_DIGEST_LENGTH,md);