patch 7.4.1537
Problem:    Too many feature flags for pipes, jobs and channels.
Solution:   Only use FEAT_JOB_CHANNEL.
diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index 4378e00..841dbd4 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -332,7 +332,7 @@
 !if "$(CHANNEL)" == "yes"
 CHANNEL_PRO	= proto/channel.pro
 CHANNEL_OBJ	= $(OBJDIR)/channel.obj
-CHANNEL_DEFS	= -DFEAT_CHANNEL
+CHANNEL_DEFS	= -DFEAT_JOB_CHANNEL
 
 NETBEANS_LIB	= WSock32.lib
 !endif