[Issue 9846] Provide ppm v2.2

https://bugs.openldap.org/show_bug.cgi?id=9846

--- Comment #5 from David Coutadeur david.coutadeur@gmail.com --- The ppm source code is being managed in a github repository where it is much easier to maintain one unique branch for the development. Especially because the ppm code is not so different between 2.5 and 2.6 versions.

Also when I submit a new release to you, it makes more work at your side for merging this into the two branches 2.5 and 2.6.

So this can be an opportunity to have a simpler process. For 2.6 branch of openldap, you have no change in the building. And now you can also merge the same ppm code in 2.5 branch, adding OLDAP_VERSION=25

Is there a problem with this integration approach ?