Byteman should support expression lists for array iniitalization

Currently it is only possible to initialise or assign an array variable to an empty array using a new expression e.g.

  BIND values : Object[] = new Object[4];
  . . .

It would be convenient to be able to be able to initialise an array using an expression list comprising a series of comma-separated Java expressions written between braces e.g.

  BIND values : Object[] = { $0, $1.getName() }
  . . .

It might also be useful to allow new array expressions to employ the same syntax e.g.

  BIND values : Object[] = null;
  . . .
  DO values = new Object[] {$0, $1.getName() };
  . . .

since this defers the creation of the array to after the IF test.