Port userstatsV2.1 patch to 5.1

[Arjen Lentz]

Tasks, anybody can pick up:

Port the patch to 5.1 and make sure it builds correctly.

[Arjen Lentz (arjen-lentz)]

fixing up reserved words issue in 5.0

[Arjen Lentz (arjen-lentz)]

Reserved words issue resolved.
See https://code.launchpad.net/~arjen-lentz/ourdelta/ourdelta-userstatsv2

Found that "FLUSH SLOW QUERY LOGS" functionality is also inside this patch. Should split that off.

[Arjen Lentz (arjen-lentz)]

FLUSH SLOW QUERY LOG[S] also separated.
Merged into trunk.

Just 5.1 port left to do. Someone want to pick up?

[Arjen Lentz (arjen-lentz)]

Notes/ideas for 5.1 merge and future maintenance:

The innodb patches should be applied AFTER the innodb 1.0.1 plugin is dropped in to storage/innobase

Perhaps it would make sense to carve up the patch, extract the parts that sit inside each engine.
This can help keep the innodb part sane on top of the plugin, as well as serve as an example for for instance adding PBXT support.
The infoschema support and rtlib mods to all the makefiles could also be separate I suppose.

Separating some of this before then trying partial merges could be a good approach.

[Arjen Lentz (arjen-lentz)]

patch split and cleaned up for 5.0. Should make the 5.1 easier.
Use related branch.

[Arjen Lentz (arjen-lentz)]

Getting dealt with by Monty in MariaDB 5.x