Queue support for Non PDO MysQL
Update Mobile Detect Library to 2.6.4

Update Mobile Detect Library to 2.6.4
Merge pull request #1316 from mkly/update_mobile_detect_library

Update Mobile Detect Library to 2.6.4
Version Bump 5.6.2.1

Version Bump 5.6.2.1
Check For Upgrade Before Running on_start event

Check For Upgrade Before Running on_start event

Some packages attache events that can have issues when they expect to be
in full page render context and upgrades.

- Do not fire on_start on upgrade