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
For information on writing a plugin for Purple, Pidgin or Finch, go
http://developer.pidgin.im and click on API. From there, see the
HOWTOs in the "Related Pages" section.
You can also generate this documentation locally by installing
doxygen and graphviz dot, then running "make docs" in the
source tree. The documentation will be in the docs/html directory.