[pirc] refactor a bit and generate a signature PMC for auto-leave-instructions in a sub. Now the :main flag is no longer needed to run PIRC with -b option (and not segfault).
[pirc] refactor a bit and generate a signature PMC for auto-leave-instructions in a sub. Now the :main flag is no longer needed to run PIRC with -b option (and not segfault).


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@34447 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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