[Gnu-arch-users] [BUG] tla file-find has no --dir option

[David Allouche]

tla file-find only needs an arch tree to work, at least to find the id
of the requested file.

Most or all other tla commands which need a tree accept a --dir option
which overrides the current working directory.

For consistence, file-find should also accept a --dir option.

Since it is trivial to chdir to the desired directory before running
"tla file-find", that is not a important problem, but that is still a
wart.

-- 
                                                            -- ddaa