patch 8.1.0294: MS-Windows: sometimes uses short directory name

Problem:    MS-Windows: sometimes uses short directory name.
Solution:   Expand to long file name with correct caps. (Nobuhiro Takasaki,
            closes #3334)
diff --git a/src/version.c b/src/version.c
index c5975e8..8cf1ad4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    294,
+/**/
     293,
 /**/
     292,