patch 7.4.794
Problem:    Visual Studio 2015 is not recognized.
Solution:   Add the version numbers to the makefile. (Taro Muraoka)
diff --git a/src/version.c b/src/version.c
index fa4cabf..a29c9fb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    794,
+/**/
     793,
 /**/
     792,