Test cases

- Added new `simple_aliases.t`

source/tlang/testing/simple_aliases.t

@@ -0,0 +1,17 @@
+module simple_aliases;
+
+int c = 0;
+int cnt()
+{
+	c=c+1;
+	return c;
+}
+
+alias expr = cnt();
+
+int main()
+{
+	int i = cnt();
+	int p = cnt();
+	return i+p;
+}