Seemingly fix behaviour on Windows.

Note: WSACleanup complains and we do not know a fix.
Change Windows version to pass SOCKET handles to libev.

One has to use the corresponding change in the ArangoDB-Windows
repository as well, where libev is patched for this purpose.
Quote a string correctly for Windows.
Circumvent a Visual Studio Express 2013 compiler bug.
Fix the initialiser order to please the compiler.