[perl #56786] [pdd25cx] Segfault with tcl

[Allison Randal via RT]

In r29934 of the branch, I can't even get tcl to build, it keeps
complaining about calls to tcl_error_s which it says doesn't exist.
Since you mentioned you were eliminating the versions of tcl_error
identical to 'die', I went through and replaced the calls to tcl_error
with calls to die. It builds now, but some tests are failing because of
empty exception handler messages.