pidgin/pidgin

Various build fixes:
release-2.x.y
2018-03-01, Shawn Napora
3825e4808643
Various build fixes:
* Added bitbucket-pipelines.yml for CI
* Removed old plugins/win32/transparency from build
* Added updated plugins/transparency.c for translation
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