* try to clear up build system for separating out ecore-x
* add #ifdefs for lots of ecore-x stuff
* break out some internal e wl functions for reuse in api
* store wl surface buffers as an inlist
* add protocol-specific client compositor data
** move lots of X client attributes here
* add pixmap type checks to a number of X-specific things, such as grabinput, to block them for non-X clients
* rearrange startup order to work with wayland
* move X screensaver code to e_comp_x
* flag modules still requiring X with -DNEED_X
given that compositing is always enabled and that it's crucial to be able to change these settings, potentially having them unavailable is not a great way to live