HGKeeper

Bump the version and update ChangeLog for the 2.14.7 release
release-2.x.y v2.14.7
2021-09-16, Gary Kramlich

f7894672b4e3

Bump the version and update ChangeLog for the 2.14.7 release

Testing Done:
Ran `make distcheck`

Reviewed at https://reviews.imfreedom.org/r/925/

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