chausner b30dca7e65 Add mIRC latest (#10091) ...

* Add mIRC 7.64

* Fix download URL for mIRC and switch to "latest" versioning scheme

* Add InstallerSuccessCodes: 1223

Co-authored-by: chausner <chausner@users.noreply.github.com>

2021-05-08 14:07:54 +00:00

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mIRC/latest

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