patch 8.1.0617: NSIS installer gets two files from the wrong directory

Problem:    NSIS installer gets two files from the wrong directory.
Solution:   Change ${VIMRT} to "..\".
diff --git a/nsis/gvim.nsi b/nsis/gvim.nsi
index 12a55bb..17e3e72 100644
--- a/nsis/gvim.nsi
+++ b/nsis/gvim.nsi
@@ -327,8 +327,8 @@
 	File ${VIMSRC}\vimrun.exe
 	File /oname=tee.exe ${VIMSRC}\teew32.exe
 	File /oname=xxd.exe ${VIMSRC}\xxdw32.exe
-	File ${VIMRT}\vimtutor.bat
-	File ${VIMRT}\README.txt
+	File ..\vimtutor.bat
+	File ..\README.txt
 	File ..\uninstal.txt
 	File ${VIMRT}\*.vim
 	File ${VIMRT}\rgb.txt
diff --git a/src/version.c b/src/version.c
index aadd161..77bfd81 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    617,
+/**/
     616,
 /**/
     615,