Temporarily revert to old crypto code

(The new code is still segfaulting for me, and I'd like to proceed with other
work.)

This largely rolls back to the revision 1545 state of the existing code
(new crypto layer is still there with no callers), though I reintroduced
the segfault fix of revision 1562.

src/tincd.c

@@ -31,13 +31,18 @@
 #include <sys/mman.h>
 #endif
 
+#include <openssl/rand.h>
+#include <openssl/rsa.h>
+#include <openssl/pem.h>
+#include <openssl/evp.h>
+#include <openssl/engine.h>
+
 #include LZO1X_H
 
 #include <getopt.h>
 
 #include "conf.h"
 #include "control.h"
-#include "crypto.h"
 #include "device.h"
 #include "logger.h"
 #include "net.h"
@@ -290,7 +295,12 @@ int main(int argc, char **argv)
 	/* Slllluuuuuuurrrrp! */
 
 	srand(time(NULL));
-	crypto_init();
+	RAND_load_file("/dev/urandom", 1024);
+
+	ENGINE_load_builtin_engines();
+	ENGINE_register_all_complete();
+
+	OpenSSL_add_all_algorithms();
 
 	if(!read_server_config())
 		return 1;
@@ -343,7 +353,7 @@ end:
 	exit_control();
 #endif
 
-	crypto_exit();
-
+	EVP_cleanup();
+	
 	return status;
 }