patch 7.4.1020
Problem:    On MS-Windows there is no target to run tests with gvim.
Solution:   Add the testgvim target.
diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index c5c0a12..ebbe279 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -1027,6 +1027,11 @@
 	$(MAKE) /NOLOGO -f Make_dos.mak win32
 	cd ..
 
+testgvim:
+	cd testdir
+	$(MAKE) /NOLOGO -f Make_dos.mak VIMPROG=..\gvim win32
+	cd ..
+
 testclean:
 	cd testdir
 	$(MAKE) /NOLOGO -f Make_dos.mak clean
diff --git a/src/version.c b/src/version.c
index 70c54aa..a2eded5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1020,
+/**/
     1019,
 /**/
     1018,