Revert "Renamed "oldOut" (23.41%) to "oldPrintStream" (62.00%). The naturalize"

This reverts commit 169bf2cf3b8eb5d7ba884dc38ede049c00bd8f10.
Revert "Renamed "e" (38.36%) to "t" (61.64%) in CouldNotReadCoreException and"

This reverts commit fb152c4ca8607068a08f7c0fe8bd1baf790dfad8.
Renamed oldPrintStream to oldOut as discussed in #834
Renamed all Throwables "t" to "e" as discussed in #834