Merge "Revert "Ignore libcore.java.lang.OldSystemTest#test_gc failures with CC.""
am: f9eed16

* commit 'f9eed16e175f8c7cb37d878acc772d653b07101e':
  Revert "Ignore libcore.java.lang.OldSystemTest#test_gc failures with CC."

Change-Id: I98dc56af38ae6eecc9711866fcc2170c4f33dd23