Add stub version of cryptdll.dll.

diff --git a/configure.ac b/configure.ac
index 0f84ec2..b7acb6a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1526,6 +1526,7 @@
 dlls/commdlg/Makefile
 dlls/crtdll/Makefile
 dlls/crypt32/Makefile
+dlls/cryptdll/Makefile
 dlls/ctl3d/Makefile
 dlls/d3d8/Makefile
 dlls/d3d9/Makefile