Removes dartc reliance on its own libraries, now can be targeted at any implementation's libraries

tests/co19/co19-compiler.status

 # Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 [ $component == dartc ]
 Language/05_Variables/05_Variables_A03_t08: Fail # TODO(dartc-team): New failure, please triage.
 Language/09_Generics/09_Generics_A04_t04: Fail # TODO(dartc-team): New failure, please triage.
 Language/09_Generics/09_Generics_A04_t05: Fail # TODO(dartc-team): New failure, please triage.
 Language/10_Expressions/01_Constants_A15_t16: Fail # TODO(dartc-team): New failure, please triage.
 Language/10_Expressions/01_Constants_A16_t01: Fail # TODO(dartc-team): New failure, please triage.
@@ skipping 89 matching lines @@
 LibTest/core/SendPort/*: Skip # missing #import("dart:isolate") (co19 issue #80)
 LibTest/core/ReceivePort/*: Skip # missing #import("dart:isolate") (co19 issue #80)
 
 
 # Marked failed after code generation removed from dartc
 
 Language/06_Functions/2_Formal_Parameters/2_Named_Optional_Formals_A02_t01: Fail # issue 963
 LibTest/core/List/every_A03_t01: Skip # status change with --check-only, Promise removed (co19 issue #79)
 LibTest/core/List/filter_A03_t01: Skip # status change with --check-only, Promise removed (co19 issue #79)
 LibTest/core/List/some_A03_t01: Skip # status change with --check-only, Promise removed (co19 issue #79)
+LibTest/core/FallThroughError/FallThroughError_A01_t01: Fail
+LibTest/core/FallThroughError/toString_A01_t01: Fail
 
 
 # Problems triaged before removal of code generation
 
 Language/13_Types/4_Interface_Types_A11_t04: Fail
-LibTest/core/InternalError/InternalError_A01_t01: Fail
-LibTest/core/InternalError/toString_A01_t01: Fail
 LibTest/core/Queue/iterator_hasNext_A01_t01: Skip # Timeout
 LibTest/core/ReceivePort/receive_A01_t02: Fail, Pass  # Fails for the wrong reason (open receive ports).
 LibTest/core/RegExp/Pattern_semantics/firstMatch_AtomEscape_A01_t01: Fail
 
 Language/05_Variables/05_Variables_A03_t04: Fail
 Language/05_Variables/05_Variables_A05_t04: Fail
 Language/06_Functions/2_Formal_Parameters/2_Named_Optional_Formals_A03_t01: Fail
 Language/07_Classes/07_Classes_A02_t06: Fail
 Language/07_Classes/07_Classes_A02_t08: Fail
 Language/07_Classes/2_Getters_A04_t03: Fail
@@ skipping 72 matching lines @@
 
 [ $component == dartium ]
 *: Skip
 
 
 [ $component == chromium ]
 *: Skip
 
 [ $component == frogium ]
 *: Skip