The value TCL_LOCATION_EVAL_LIST in the type field of a CmdFrame appears to
exist only for the sake of taking great pains to make sure that pure list
values remain pure list values.

The value of pure list values is no longer what it once was. For a long long
time now, any canonical list values have been equally good.
Many simplifications to the TIP 280 machinery.
   * Removed support for non-NULL invoker when TCL_EVAL_DIRECT requested.
   * Eliminated TCL_EVAL_CTX eval flag.
   * Removed Tcl_Preserve-ability of ContLineLoc pointers.
   * Removed clLoc field of CompileEnv struct.
Never guess non-existing timezone name "America/Brasilia" on Windows. Reported by Arnulf Wiedemann
Never guess non-existing timezone name "America/Brasilia" on Windows. Reported by Arnulf Wiedemann
merge trunk