from Sebastian

from Sebastian

* merges:
  Summary: chore, kick ase extern inline Keywords: code hygiene build clang
  Summary: chore, don't check for extern inline support anymore Keywords: code hygiene build clang
  Summary: chore, crunch the number of extern_inline definitions Keywords: code hygiene build clang
  Summary: chore, refactor nested function construct in event-Xt.c Keywords: build clang
  Summary: chore, replace nested function construct by cpp equivalent Keywords: build clang

Conflicts:
	src/ui/X11/event-Xt.c  -- trivial, resolved.

Signed-off-by: Steve Youngs <steve@sxemacs.org>