wininet(4/5): Support querying the cipher strength of an SSL connection

[Juan Lang]

> === W2K8SE (32 bit http) ===
> http.c:406: Test failed: expected status 11 (INTERNET_STATUS_NAME_RESOLVED) 1 times, received 0 times
> http.c:413: Test failed: expected status 30 (INTERNET_STATUS_SENDING_REQUEST) 2 times, received 0 times
> http.c:414: Test failed: expected status 31 (INTERNET_STATUS_REQUEST_SENT) 2 times, received 0 times
> http.c:415: Test failed: expected status 40 (INTERNET_STATUS_RECEIVING_RESPONSE) 2 times, received 0 times
> http.c:416: Test failed: expected status 41 (INTERNET_STATUS_RESPONSE_RECEIVED) 2 times, received 0 times
> http.c:418: Test failed: expected status 110 (INTERNET_STATUS_REDIRECT) 1 times, received 0 times
> http.c:443: Test failed: Wrong URL http://test.winehq.org/testredirect

These test failures have nothing to do with the patch, of course.
--Juan