2001-09-27  Egor Duda  <deo@logos-m.ru>

	* fhandler.h (class fhandler_base::unset_name): New function.
	* fhandler.cc (fhandler_base::unset_name): Deallocate cygheap
	memory used for file names and unset the names.
	(fhandler_base::set_name): Use it. Eliminate no_free_names ()
	logic to avoid memory leaks.
	(fhandler_base::~fhandler_base): Ditto.
	(fhandler_disk_file::fhandler_disk_file): Eliminate no_free_names ()
	logic.
	(fhandler_disk_file::open): Ditto. Always allocate space for
	win32_path_name on cygheap.