Error if a stack allocated variable is too big (configurable with --max-stack-object-size).

test/test_suite/statements/big_locals.c3

@@ -0,0 +1,6 @@
+import std;
+fn int main(String[] args)
+{
+	int[1024 * 1024] x; // #error: The size of this local variable (4096 Kb) exceeds the maximum allowed stack object size (128 Kb)
+    return 0;
+}