* autoload.cc (WNetGetResourceParentA): Import.

	* autoload.cc (WNetGetResourceParentA): Import.
	(WNetOpenEnumA): Import.
	(WNetEnumResourceA): Import.
	(WNetCloseEnum): Import.
	* fhandler.h (fhandler_netdrive::telldir): Add declaration.
	(fhandler_netdrive::seekdir): Ditto.
	(fhandler_netdrive::closedir): Ditto.
	* fhandler_netdrive.cc: Drop explicit including windows.h.  Include
	winnetwk.h instead of shlwapi.h.  Include dirent.h.
	(fhandler_netdrive::readdir): Implement.
	(fhandler_netdrive::telldir): New method.
	(fhandler_netdrive::seekdir): New method.
	(fhandler_netdrive::closedir): Ditto.