[ws2_32] (try 2) in some cases send should block until the entire buffer is sent

[Damjan Jovanovic]

Try 2 replaces the deeply nested if's in the test with goto's.

Changelog:
*  On non-overlapped blocking stream sockets, winsocks' send() blocks
until the entire buffer is sent or an error occurs, while wine (like
Linux) currently returns as soon as any data is sent. Added a test
proving this is the case and fixed WSASendTo to do the right thing.

Damjan Jovanovic
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