targets/xvmc-nouveau: convert to static/shared pipe-drivers

Similar to vdpau targets, we're going to convert the individual
target libraries into a single one.

The library can be built with the relevant pipe-drivers
statically linked in, or loaded as shared modules.
Currently we default to static.

Cc: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Tested-by: Thomas Helland <thomashelland90 at gmail.com>
diff --git a/configure.ac b/configure.ac
index 1e94df6..c37981b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1410,6 +1410,7 @@
 if test "x$enable_xvmc" = xyes; then
     PKG_CHECK_MODULES([XVMC], [xvmc >= $XVMC_REQUIRED x11-xcb xcb-dri2 >= $XCBDRI2_REQUIRED])
     GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS xvmc"
+    enable_gallium_loader=yes
 fi
 AM_CONDITIONAL(HAVE_ST_XVMC, test "x$enable_xvmc" = xyes)
 
@@ -1968,7 +1969,7 @@
             PKG_CHECK_MODULES([NOUVEAU], [libdrm_nouveau >= $LIBDRM_NOUVEAU_REQUIRED])
             gallium_require_drm_loader
             GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS nouveau"
-            gallium_check_st "nouveau/drm" "dri-nouveau" "" "xvmc-nouveau" "vdpau/nouveau" "omx-nouveau"
+            gallium_check_st "nouveau/drm" "dri-nouveau" "" "xvmc/nouveau" "vdpau/nouveau" "omx-nouveau"
             DRICOMMON_NEED_LIBDRM=yes
             ;;
         xfreedreno)
@@ -2227,7 +2228,7 @@
 		src/gallium/targets/vdpau/Makefile
 		src/gallium/targets/xa/Makefile
 		src/gallium/targets/xa/xatracker.pc
-		src/gallium/targets/xvmc-nouveau/Makefile
+		src/gallium/targets/xvmc/Makefile
 		src/gallium/tests/trivial/Makefile
 		src/gallium/tests/unit/Makefile
 		src/gallium/winsys/Makefile