Add a section to docs for async operations. #1139
Don't flush leaf pages asynchronously for now; reference #1152.
Clean up 3a8ed75, I was sloppy.
Merge branch 'develop' into async-doc
Review/edit the new asynchronous doc page, lots of random
cleanup/simplifications (at least, hopefully, they cleanup
and/or simplify).
Uninitialized variable, thanks, Jenkins!
Add a note about WT_ASYNC_OP handles.
Add WT_ASYNC_OP, WT_ASYNC_CALLBACK and WT_TXN_NOTIFY to PREDEFINE.
Merge pull request #1148 from wiredtiger/async-doc

Add a section to docs for async operations, closes #1139.
WT_ASYNC_OP.{get_id,get_type} aren't data modification methods.
Flag new structures not listed in PREDEFINE. #1148
Merge branch 'develop' of github.com:wiredtiger/wiredtiger into develop
WT_ASYNC_OP thread safety information should point to the thread
page in the docs.