get_files(path, recurse, finddir, findfile, sort_by, cancel_fn, f_t, d_t)
get_files returns a sorted tables of directories and (another) of files
path is the starting path; recurse == false.. only that path will be searched
findfile & finddir are definable search functions
if not defined all files/dirs are returned if false is passed.. none
or you can provide your own function
sort_by can be by "name" "size" "date" or "none" to perform no sorting
note: for "size" and "date" you may need to strip the attribute data to use
the returned filename
cancel_fn if not defined or not a function no user cancel otherwise supply
your own cancel function which returns true to cancel searching for files
f_t and d_t allow you to pass your own tables for re-use but isn't necessary
Change-Id: Ic4c2ad9c9b5abeeeeaf572880edbc8873d52066b
ca7399821f