tgt: update to 1.0.80

- add runtime test
- drop the patch that has gone upstream

Signed-off-by: Maxim Storchak <m.storchak@gmail.com>

net/tgt/patches/110-bzero.patch

@@ -1,11 +0,0 @@
---- a/usr/iscsi/target.c
-+++ b/usr/iscsi/target.c
-@@ -224,7 +224,7 @@ get_redirect_address(char *callback, char *buffer, int buflen,
- {
- 	char *p, *addr, *port;
- 
--	bzero(buffer, buflen);
-+	memset(buffer, 0, buflen);
- 	if (call_program(callback, NULL, NULL, buffer, buflen, 0))
- 		return -1;
-