Re: Make description of heap records more talkative for flags

The following review has been posted through the commitfest application:
make installcheck-world:  not tested
Implements feature:       not tested
Spec compliant:           not tested
Documentation:            not tested

-        appendStringInfo(buf, "off %u", xlrec->offnum);
+        appendStringInfo(buf, "off %u flags %02X", xlrec->offnum,
+                         xlrec->flags);

Can we add "0x" before the flags so that it is abundantly clear it's a
hex value?

Nathan