* Get rid of 'index' lines in patches, which are unnecessary and likely wrong anyway (esp. when there are multiple patches)
* Simplify patches to remove unnecessary context and make them more robust
* Update .bazelrc for Windows compatibility
* Block inclusion of (legacy) WinSock.h to avoid errors
* Suppress warnings for Windows code
* Include boost::asio in includes so that it is passed as -isystem to avoid warnings
* Link with -lpthread only on non-Windows
* Undefine BOOST_FALLTHROUGH, which is unnecessary and causes macro redefinition warnings
* Define RAY_STATIC and ARROW_STATIC to compile for Windows
* Add WinSock import library for Arrow
