Accessing generic member requires explicit cast, but shouldn't

[fasterthanlime]

Test:

use sam-assert

describe("accessing generic member should not require a cast", ||
    g := Gift<String> new("hi")
    g tuvalu println()
)

Gift: class <T> {
    tuvalu: T
    init: func (=tuvalu)
}

Expected behaviour: pass
Current behaviour: compiled error (you can't call methods on generic types, blah)

[fasterthanlime]

Got a 90% fix for that, just shouldn't do it in case of lhs.

[fasterthanlime]

Might be a dupe of #361

Edit: nope, different issue