Should be able to blacklist >1 member when exporting

[joshlemer]

minimized code

trait Foo {
  def a = 1
  def b = 1
  def c = 1
}

class Bar(foo: Foo) {
  export foo.{a => _, b => _, _}
}

Compilation output

Double definition:
final def _: => Int in class Bar at line 8 and
final def _: => Int in class Bar at line 8
have the same type after erasure.

expectation

It should allow multiple members to be blacklisted from export