CVS commit by mornfall: Making Groupers create TreeNodes (instead of NodeProducer), phase 1: pass Tree pointer to addNode, so that groupers can stash nodes. Needed now, as Groupers will soon become sole mass-producers of TreeNodes. Fixing Tree::addStashed to cope with this (instead of looping infinitely).
M +12 -4 depgroupers.cpp 1.8 M +3 -2 depgroupers.h 1.6 M +5 -3 filters.cpp 1.10 M +1 -1 filters.h 1.8 M +5 -5 grouper.cpp 1.19 M +4 -4 grouper.h 1.13 M +2 -2 pkggroup.cpp 1.7 M +1 -1 pkggroup.h 1.7 M +6 -3 tree.cpp 1.14