Hallo!
Sounds like you are using an 0.40 version of Pd-extended. The libdir stuff was converted to use Thomas Grill's loader functionality, so you have to load the "libdir" lib before you can load any libdirs. This same libdir.pd_linux binary will also work with vanilla Pd >= 0.40.
Okay, thanks - I understand ...
Can we make a site on puredata.org where we descripe all that stuff from a user point of view ? Maybe in http://puredata.org/docs, but I don't know where to put it there, because there are only user manuals - or also in downloads/pd-extended ...
Maybe also the release path you described (with links): dated auto-build --> test build --> RC build --> release so that newbies know which version they should download and how to use it ...
LG Georg