[WINHTTP] Sync with Wine Staging 1.9.23. CORE-12409

[WINHTTP] Sync with Wine Staging 1.9.23. CORE-12409

e27ff36 winhttp: Added WINHTTP_OPTION_CLIENT_CERT_CONTEXT option stub.
9bc3e96 winhttp: Added WINHTTP_OPTION_MAX_CONNS_PER_SERVER and WINHTTP_OPTION_MAX_CONNS_PER_1_0_SERVER options stub.
c8b166e winhttp: Also pass hostname to jsproxy.
668d429 winhttp: Indicate that WinHttpCrackUrl should return string pointers.
985443e winhttp: Don't perform buffer size tests for components that don't pass buffer in WinHttpCrackUrl.
17b4abf winhttp: Validate the port number in WinHttpCrackUrl.
1d07f89 winhttp: Set required buffer length for all components in WinHttpCrackUrl.
6c0fdc0 winhttp: Prevent console spamming in get_system_proxy_autoconfig_url.

svn path=/trunk/; revision=73357