Add vsyasm to cmake build.
diff --git a/frontends/CMakeLists.txt b/frontends/CMakeLists.txt
index 0d11773..9858b61 100644
--- a/frontends/CMakeLists.txt
+++ b/frontends/CMakeLists.txt
@@ -1,2 +1,3 @@
 ADD_SUBDIRECTORY(yasm)
 ADD_SUBDIRECTORY(tasm)
+ADD_SUBDIRECTORY(vsyasm)