I don't know much about clipboard managers, but I do have Klipper in a fresh KDE install from the 32-bits DVD.
I suppose Klipper is part of the kdebase4-workspace RPM. I don't know if Glipper is shipped with the GNOME version of Mageia.
I searched for parcellite, pastie and glippy, and you're right, they're not included in the distribution for the moment. Hopefully some will be packaged soon and included as backports in Mageia 1, and as core software in Mageia 2.
You may want to file a bug here:
https://bugs.mageia.org/Once you're logged in (I think your forum account should be enough to connect to the Bugzilla, if that's not the case, you might need to register here: identity.mageia.org to have a Mageia account), click on File a Bug > Mageia and file it as a "New RPM package request".
Just explain which package you request, and eventually give a link to the project's page.
If that's possible, it is better to file one bug per package. So if you want all three packages included, file three bugs.