Streamline pattern/meta verifies instead of special casing them

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/verify.h b/verify.h
index d5a906e..49ce417 100644
--- a/verify.h
+++ b/verify.h
@@ -18,6 +18,7 @@
 	VERIFY_SHA512,			/* sha512 sum data blocks */
 	VERIFY_META,			/* block_num, timestamp etc. */
 	VERIFY_SHA1,			/* sha1 sum data blocks */
+	VERIFY_PATTERN,			/* verify specific patterns */
 	VERIFY_NULL,			/* pretend to verify */
 };