provide a config upgrade path to version 13 which nulls/frees out
theme config (save memory - but more housekeeping), and that also
copeis ofer all files in ~/.e/e/themes to ~/.elementary/themes so you
don't lose themes you personally have and deletes the old e theme dir
if this succeeds.
also remove all #includes of Elementary.h and Emotion.h from single c
files as they are requirements now and in e.h
also remove theme path vars and code as theme path is no longer used.
now e only uses elementary's theme. this is to stop the bitrot and
forking of e's theme vs the unified elm theme that has everything for
e in it already. this obviously makes elm a requirement of e18 on, and
this also notes that emotion is always in efl these days, so its no
longer an option, and ecore-imf is no longer used as edje does the
entires now itself. in future it'll all be elm.
this is a major unification point for themes for elm and e. this will
need some testing, but everything seems to work day-to-day, but theme
selector is untested.
this also removes the theme selector for splash as that is now simply
unified with the same theme as everything else.