update mysqld profile
This updates the mysqld to what I use on my servers nowadays.
Note: my profile also has
capability sys_resource,, but I'm not sure why I had to add this and therefore didn't include it in this merge request.
Speaking about "why I had added $whatever" - these changes were collected over the last years and of course ;-) I don't remember any details.
I propose this for 2.12..master.