[DOC] This makes mysql_refresh() as described in
http://dev.mysql.com/doc/refman/6.0/en/mysql-refresh.html
available as mysqli_Refresh() and mysqli->refresh()
MYSQLI_REFRESH_BACKUP_LOG is only available when linking libmysql 6.0
or mysqlnd
- More statistics
- Fixed endless loop - mysqlnd_stmt_next_result() returned FAIL but as it
is defined to be 1 (and PASS is 0), checking for mysqlnd_stmt_more_result()
was successful although we were expecting a FAIL.
Clearly separated fetching (physical reading) from decoding phases (data
interpretation). Threaded fetching added but disabled as needs more work for
Windows. For Linux needs some touches to add pthreads if this is enabled,
probably with a compile-time switch.
The code reorganisation makes it easy to add also async API, similar to
cURL's one.
