Display share difficulty on log with a shortened hash display on submission.

cgminer.c

@@ -1818,7 +1818,9 @@ static bool submit_upstream_work(const struct work *work, CURL *curl, bool resub
 		if (opt_scrypt)
 			sprintf(hashshow, "%08lx.%08lx", (unsigned long)(hash32[7]), (unsigned long)(hash32[6]));
 		else {
-			sprintf(hashshow, "%08lx.%08lx%s", (unsigned long)(hash32[6]), (unsigned long)(hash32[5]),
+			int intdiff = round(work->work_difficulty);
+
+			sprintf(hashshow, "%08lx Diff %d%s", (unsigned long)(hash32[6]), intdiff,
 				work->block? " BLOCK!" : "");
 		}