dartc cannot handle constructor super call unless it's the first initializer

[DartBot]

This issue was originally filed by @mhausner

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The Dart grammar allows the super initializer call to be at any position in the initializer list. Dartc reports an error if the super call is not first in the list. Eg:

class B extends A {
  var b1, b2;
  B(x) : b1 = E(1), super(E(2), E(3)), b2 = E(5) {
    E(7);
  }
}

file:[....]Constructor2Test.dart:27: Unexpected token 'super' (expected 'IDENTIFIER')
    26:
    27: B(x) : b1 = E(1), super(E(2), E(3)), b2 = E(5) {

I will check in Constructor2Test.dart in the language suite.

[DartBot]

This comment was originally written by mmendez@google.com

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Marked this as blocking #286.

[DartBot]

This comment was originally written by mmendez@google.com

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Removed Priority-Medium label.
Added Priority-High label.

[DartBot]

This comment was originally written by fab...@google.com

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Set owner to fab...@google.com.

[DartBot]

This comment was originally written by fab...@google.com

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Added Started label.

[scheglov]

We are removing code generation from DartC.

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Added WontFix label.