patch 8.0.0279: MSVC 2015 uses a different dll name

Problem:    With MSVC 2015 the dll name is vcruntime140.dll.
Solution:   Check the MSVC version and use the right dll name. (Ken Takata)
diff --git a/src/version.c b/src/version.c
index 944dfc9..82ee6d4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    279,
+/**/
     278,
 /**/
     277,