Allow the "self" parameter to be $/# for macro methods. Fix bug when passing a type as a compile time value.

test/test_suite/expressions/test_ct_param_bug.c3

@@ -0,0 +1,7 @@
+module test;
+macro @foo($aaa) {}
+fn int main(String[] args)
+{
+    @foo(int); // #error: must be followed by either
+    return 0;
+}