patch 8.0.1400: color scheme check script shows up as color scheme

Problem:    Color scheme check script shows up as color scheme.
Solution:   Move it to the "tools" subdirectory. (closes #2457)
diff --git a/Filelist b/Filelist
index 269206f..ea7426f 100644
--- a/Filelist
+++ b/Filelist
@@ -666,6 +666,7 @@
 		runtime/autoload/xml/*.vim \
 		runtime/colors/*.vim \
 		runtime/colors/README.txt \
+		runtime/colors/tools/*.vim \
 		runtime/compiler/*.vim \
 		runtime/compiler/README.txt \
 		runtime/indent/*.vim \