[Issue 453] When importing modules compiler can not distinguish between directory and file

[Walter Bright]

Consider this:

	int Foo;
	class Foo { const int bar = 3; const int min = 4; }

and the code:

	Foo + 3;	// use the int Foo
	Foo.max + 3;	// use the int Foo
	Foo.bar + 3;	// use the class Foo
	Foo.min + 3;	// error, ambiguous

D can be made to work that way. I don't think it's a good idea, however. 
It'll be a major source of confusion, and bizarre special cases.