[sql generation] fix missing join with outer joins w/ rhs invariant variable... ... where the principal where not the processed relation. This led to major refactoring in outer join handling, which is now much clearer and powerful. Closes #1579228

#! /bin/sh -e
#

if [ "$1" = configure ]; then
  if which install-docs >/dev/null 2>&1; then
    install-docs -i /usr/share/doc-base/cubicweb-doc
  fi
fi


#DEBHELPER#

exit 0