Don't call pkg_info to get the installed Emacs version; always use the
version matching EMACS_TYPE set by users. Be DEPENDS to it. This should
address pkg/37146 by Aleksey Cheusov.
While here convert some emacs lisp packages to user-destdir.
rsltc provides type-checking, pretty-printing, generation of confidence
conditions, showing module dependencies, translation to Standard ML, to
C++, and to PVS, and translation to RSL from UML class diagrams.