shdocvw: Added DISPID_AMBIENT_OFFLINEIFNOTCONNECTED and DISPID_AMBIENT_SILENT implementation in DocHost::Invoke.

ole32: Fix return codes returned by IBindCtx::RegisterObjectBound and IBindCtx::RevokeObjectBound when used on NULL objects.

Add tests for IBindCtx::GetObjectParam, IBindCtx::RevokeObjectParam and 
IBindCtx::RevokeObjectBound.

Also, RPCSS_NPConnect() returns a file handle so treat it as such by
checking it against INVALID_HANDLE_VALUE and not NULL.

Do a small tweak in WS2_send() so it looks more like WS2_recv().

Simplify the file handle handling in FTP_FtpPutFileW().

Also, RPCRT4_RpcssNPConnect() returns a file handle so treat it as
such by checking it against INVALID_HANDLE_VALUE and not NULL.

The tm_isdst field needs to be initialized for mktime to do the right thing.