Bump XLOG_PAGE_MAGIC.

The unlogged tables patch (commit 53dbc27c,
2010-12-29) should have done this, since it changes the format of an
XLOG_SMGR_CREATE record.

src/include/access/xlog_internal.h

@@ -71,7 +71,7 @@ typedef struct XLogContRecord
 /*
  * Each page of XLOG file has a header like this:
  */
-#define XLOG_PAGE_MAGIC 0xD065	/* can be used as WAL version indicator */
+#define XLOG_PAGE_MAGIC 0xD066	/* can be used as WAL version indicator */
 
 typedef struct XLogPageHeaderData
 {