As it is said in http://www.maatkit.org/: "Maatkit has become part of Percona Toolkit, and there will be no further development or releases of Maatkit separately from Percona Toolkit." Reproducible: Always http://www.maatkit.org/ http://www.percona.com/software/percona-toolkit/
Please don't CC random people.
I've added a simple ebuild to my overlay (details available here http://anon-git.one-gear.com/?p=chaos.git;a=summary) I used the deps mentioned in the install doc but there may be more. If in use you find missing stuff let me know and I'll add it in there.
This has happened and can be closed.