Add rewriter support for @encode expressions. For example, we currently turn:
Add rewriter support for @encode expressions. For example,
we currently turn:

    c = @encode(char *)[2] + 4;

into:

    c = "foo"[2] + 4;

Right now the foo string is hard coded, but you can imagine a world
where it wouldn't be :)




git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@43093 91177308-0d34-0410-b5e6-96231b3b80d8

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