This will allow us to avoid possible compilation regressions, and also some
failures in different environments (for example because of different
sizeof(size_t)).
For example we can avoid next issues:
- #361
- #314
- #311
(And I'm pretty sure that this is not complete list)
And of course it reduce job for maintainers.
But it also have one downside, appveyor doesn't have such concurrency like
travis-ci, so it can take a while to finish the whole build, but we can resolve
this later, or reduce build matrix to only one for autotools and one for cmake.
Fixes: #364
* change and move the openssl self installer off to a site we own
- the old link was 404, probably due to being replaced with a newer
non-vuln version. But since we are only using this installer to
auto-build with on appveyor (not as a release), then having a file
we don't change and own seems to be a better solution.
* reduce verbosity
This does the same thing as Travis-CI but for windows.
@nmathewson
Go to: https://ci.appveyor.com/login -> Login using Github
Click **+New Project** -> Choose **Github** to the left -> Find **Libevent** in the list and click **Add**
