Implemented serialui dll containing CommConfigDialog,
GetDefaultCommConfig and SetDefaultCommConfig.

diff --git a/Make.rules.in b/Make.rules.in
index de70b81..0fa344f 100644
--- a/Make.rules.in
+++ b/Make.rules.in
@@ -132,6 +132,7 @@
 	rasapi32 \
 	riched32 \
 	rpcrt4 \
+	serialui \
 	setupapi \
 	setupx \
 	shell32 \