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.

oleaut32: TKIND_COCLASS parameters to Invoke'd functions should be converted into VT_DISPATCH instead of VT_UNKNOWN.

Add a test for this.

ole32: Fix BindCtxImpl_GetBindOptions to return the correct locale and to not fail if the input size is too large.

Also pass the right string to SymEnumSymbols and check for _ in symbol
name, instead of beginning of string.