This enables breakpad Windows support **only**.
The scope of this was limited to allow for inclusion into 0.0.4 release.
Breakpad for now is a Windows-only functionality, as this platform has
largest audience and is the only one that has no system-provided stack
tracing utility.
Upon crash, breakpad will try to create a dump and save current game,
present user with some vital information, then open explorer on the
created files for user convenience, asking him/her to create a new
issue with OpenRCT2 on Github.
