Bug#666106: kfreebsd-i386: Exceptions with tracebacks in task rendezvous cause STORAGE_ERROR

[Nicolas Boulenguez]

Package: gnat-4.9
Followup-For: Bug #666106
Control: reassign -1 gnat-5 5.2.1-18

The message is "s-intman.adb:139 explicit raise" again.