Auto init/deinit libcrypto

This builds on the previous commit to auto initialise/deinitialise
libcrypto.

Reviewed-by: Richard Levitte <levitte@openssl.org>
diff --git a/engines/e_dasync.c b/engines/e_dasync.c
index 2f18d07..cca9f5e 100644
--- a/engines/e_dasync.c
+++ b/engines/e_dasync.c
@@ -59,6 +59,7 @@
 #include <openssl/evp.h>
 #include <openssl/async.h>
 #include <openssl/bn.h>
+#include <openssl/crypto.h>
 
 #define DASYNC_LIB_NAME "DASYNC"
 #include "e_dasync_err.c"
@@ -72,7 +73,7 @@
 static int dasync_destroy(ENGINE *e);
 static int dasync_init(ENGINE *e);
 static int dasync_finish(ENGINE *e);
-void ENGINE_load_dasync(void);
+void engine_load_dasync_internal(void);
 
 
 /* Set up digests. Just SHA1 for now */
@@ -210,7 +211,7 @@
     return ret;
 }
 
-void ENGINE_load_dasync(void)
+void engine_load_dasync_internal(void)
 {
     ENGINE *toadd = engine_dasync();
     if (!toadd)