Create dll/kernel/messages directory.

diff --git a/configure.in b/configure.in
index 58397ef..360f957 100644
--- a/configure.in
+++ b/configure.in
@@ -981,6 +981,7 @@
 dlls/ddraw/direct3d \
 dlls/ddraw/dpalette \
 dlls/ddraw/dsurface \
+dlls/kernel/messages \
 "
 for i in $extra_subdirs; do [ -d $i ] || (echo "creating $i" && mkdir $i); done ])