* configure.ac,include/dix-config.h.in: define the XEPHYR_DRI macro.
define it when --enable-xephyr and --enable-dri are both turned on.
* hw/kdrive/ephyr/XF86dri.c: copy this from mesa source to enable
Xephyr to talk DRI protocol the host X. In mesa, this is used by libGL.so to
talk DRI protocol with the server.
* hw/kdrive/ephyr/ephyr.c: finally initialise the DRI extension
in the ephyrInitScreen() function.
* hw/kdrive/ephyr/ephyrdri.c,ephyrdriext.c: safeguard the compilation
using the XEPHYR_DRI macro.
Dodji Seketeli