Fixed dynamic array and friends allowed in literal array.

Recompile went without error, with no changes.
parser: you can write #(4 #(5 6 #()) 7) as #(4 (5 6 ()) 7)
Fixed symbol, #ab'cd' is now error, not #abcd.
Allows write #(#on:do: #Object) as #(on:do: Object)
Can have symbols for binary selectors.

They work #-less inside literal array, too.