Mostly stub implemenation for cfgmgr32.

diff --git a/configure.ac b/configure.ac
index 2312127..8e19ab4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1414,6 +1414,7 @@
 dlls/avicap32/Makefile
 dlls/avifil32/Makefile
 dlls/cabinet/Makefile
+dlls/cfgmgr32/Makefile
 dlls/comcat/Makefile
 dlls/comctl32/Makefile
 dlls/comctl32/tests/Makefile