pidgin/pidgin

Make sure we remove all the files we install.
release-2.x.y
2021-04-11, Gary Kramlich
5407cbf3c5dd
Make sure we remove all the files we install.

Patch was provided by Johann Lochner.

Testing Done:
Build and ran the installer and uninstaller and verified that `C:\Program Files (x86)\Pidgin` was empty and therefore removed.

Bugs closed: PIDGIN-17515

Reviewed at https://reviews.imfreedom.org/r/612/
How to build Pidgin for Windows using MinGW
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For the latest build instructions, please refer to:
http://developer.pidgin.im/wiki/BuildingWinPidgin