1.0.14.22: more backtrace verbosity, for a change

1.0.14.22: more backtrace verbosity, for a change

 * Revert part of the *SHOW-ENTRY-POINT-DETAILS* functionality: always
   return the DEBUG-FUN-KIND from FRAME-CALL, so that instead of the
   rather confusing

    (FOO MY-ARGUMENT)
    (FOO MY-ARGUMENT)

   a slightly mysterious but hopefully less confusing

    (FOO MY-ARGUMENT)
    (FOO MY-ARGUMENT) [:EXTERNAL]

   appears in backtraces where the XEP hasn't been tail-merged.