* libsupc++/eh_personality.cc: Include unwind-pe.h. Remove
all pointer encoding logic.
(struct lsda_header_info): Add ttype_base.
(get_ttype_entry): Use it instead of a context.
(check_exception_spec): Likewise.
(PERSONALITY_FUNCTION): Initialize ttype_base. Store it in
the c++ exception header for __cxa_call_unexpected.
(__cxa_call_unexpected): Use it.
From-SVN: r41982