This merges release-6.3 branch right before it was fully formatted.
There were quite a few conflicts that are resolved here. CoroFlow had
a check for OOM errors introduced in 6.3, but didn't seem applicable in
the new implmentation which seems to use boost.
This will stop eio threads for both the client (`fdb_stop_network()`)
and the server. This change is being done more for the former, but I
don't see any harm in doing the latter as well.
In Linux, KAIO uses ASSERT to make sure open() flags have
OPEN_UNBUFFERED set.
In Windows, we uses if-condition and return io_errors() when the
flag is not set.
This PR makes Windoes implementation always use ASSERT to check the
flag.
Remove the use of relative paths. A header at foo/bar.h could be included by
files under foo/ with "bar.h", but would be included everywhere else as
"foo/bar.h". Adjust so that every include references such a header with the
latter form.
Signed-off-by: Robert Escriva <rescriva@dropbox.com>
