display properties of adjacent overlays
Fix checked into branch.
** don't require path hints for *shell*
http://lists.gnu.org/archive/html/bug-gnu-emacs/2008-01/msg00046.html
-** Two display bugs involving interactions between after-string and
-display properties of adjacent overlays
-http://lists.gnu.org/archive/html/bug-gnu-emacs/2007-10/msg00119.html
-First bug is fixed in trunk: 2008-02-29 checkin to xdisp.c by cyd.
-
** overlay face property not used for after-string property
http://lists.gnu.org/archive/html/bug-gnu-emacs/2007-10/msg00124.html