pidgin/pidgin

Add a compatiblity layer for g_s?list_free_full and port everything to it.
release-2.x.y
2021-02-12, Gary Kramlich
d687fda4047d
Add a compatiblity layer for g_s?list_free_full and port everything to it.

This avoids a warning from stuff like (GFunc)g_free being an invalid cast.

Testing Done:
Compiled

Reviewed at https://reviews.imfreedom.org/r/498/
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