It is okay for checkpoint reads to see a page that is discarded in the live system.
Ignoring return value of function '__wt_event_handler::handle_close'.
Ignoring return value of function '__wt_event_handler::handle_close'.
c07dca7 removed the code to free the hazard array when closing the
list of sessions, remove the comment to match.
Merge branch 'develop' into block-diag-fix
Minor restructuring, don't reach through the session handle to figure out
if we're dealing with a read-only (checkpoint) handle.
Merge pull request #741 from wiredtiger/block-diag-fix

Diagnostic fix for checkpoint reads
Don't call checkpoint-unload on checkpoint-load error; unload does
things like truncate the file, and if we fail early enough to have
not yet initialized the checkpoint, really bad stuff would happen,
including data corruption.
Clarify a comment.