patch 8.0.1781: file names in quickfix window are not shortened

Problem:    File names in quickfix window are not always shortened.
Solution:   Shorten the file name when opening the quickfix window. (Yegappan
            Lakshmanan, closes #2851, closes #2846)
diff --git a/src/version.c b/src/version.c
index 7726f84..ae231be 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1781,
+/**/
     1780,
 /**/
     1779,