Add 'engine/' from commit 'a8e37fc010'

git-subtree-dir: engine
git-subtree-mainline: b74841629e
git-subtree-split: a8e37fc010

engine/modules/gdscript/tests/scripts/parser/warnings/shadowed_constant.gd

@@ -0,0 +1,8 @@
+# See also `parser-errors/redefine-class-constant.gd`.
+const TEST = 25
+
+
+func test():
+	# Warning here. This is not an error because a new constant is created,
+	# rather than attempting to set the value of an existing constant.
+	const TEST = 50