pidgin/pidgin

Move all the wrap files to use wrap-file instead of wrap-git and wrap-hg

Testing Done:
ran the following command too many times making sure everything still worked.

```
meson subprojects purge --confirm ; rm -rf build && meson build -Dbuild-dependencies=true -Dwrap_mode=forcefallback
```

Reviewed at https://reviews.imfreedom.org/r/1799/
REVIEWBOARD_URL = "https://reviews.imfreedom.org/"
REPOSITORY = "pidgin/pidgin"
REPOSITORY_TYPE = "mercurial"
BRANCH = "default"
LAND_DEST_BRANCH = "default"
LAND_PUSH = False