Merge branch 'elisp-work'

Merge branch 'elisp-work'

* elisp-work:
  news: document all the recent elisp-related changes and improvements
  coverage: byte-compiling elisp files in different subdirectories
  elisp: honour AM_ELCFLAFS and ELCFLAGS in byte-compilation
  elisp: --batch implies -q, remove -q
  elisp: support elisp files in subdirectories properly
  elisp: simplify suffix rules using emacs '-L' option
  elisp: no need to "absolutize" $(srcdir) and $(builddir) ...
  elisp: prefer $(builddir) files over $(srcdir) ones
  elisp: use suffix rules, get rid of 'elisp-comp' script (mostly a rewrite)
  coverage: elisp path contains $(srcdir) and $(builddir)
  coverage: emacs lisp files in subdirectories