Name: directory - get directory information

Syntax:
	string *directory(string path)

Description:
	The directory efun takes a path as argument and returns a two-
	dimensional array. The first dimension has as size the number
	of files in the directory. The second dimension has the following
	elements:

	0: name of the file (string)
	1: size of the file in bytes (int)
	2: modification time of the file in Unix format (int)
	3: mode bits, see /include/dir.h for details.
	4: 0 (int) if the file is a regular file or directory, else
	   it contains the path of the file where this is a link to.

Return value: see above

Examples:
	directory("/*NEWS"); may return
	({
	  ({ "NEWS",    1161, 701047901, 100000, 0 }),
	  ({ "PLYNEWS",   78, 701800762, 100000, 0 }),
	  ({ "WIZNEWS",  609, 700748347, 100000, 0 })
	})

	directory("/");, directory("."); and directory("/."); all return the
	contents of directory "/".

See also: lib/ls, efun/get_dir, efun/file_info