add zap_isdn.c to windows build.

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@125 a93c3328-9c30-0410-af19-c9cd2b2d52af

libs/openzap/openzap.vcproj

@@ -184,6 +184,10 @@
 				RelativePath=".\src\zap_io.c"
 				>
 			</File>
+			<File
+				RelativePath=".\src\zap_isdn.c"
+				>
+			</File>
 			<File
 				RelativePath=".\src\zap_skel.c"
 				>
@@ -304,6 +308,10 @@
 				RelativePath=".\src\include\zap_config.h"
 				>
 			</File>
+			<File
+				RelativePath=".\src\include\zap_isdn.h"
+				>
+			</File>
 			<File
 				RelativePath=".\src\include\zap_skel.h"
 				>