Two minor tweaks regarding the fallback from -u/-d to default mode:

Two minor tweaks regarding the fallback from -u/-d to default mode:
(1) Use all files found on the command line, but do *not* use all stray
files found during fallback tree recursion.
(2) If the fallback works, call that success, i.e. exit(0).
As pointed out by naddy@, the latter is required for ports' happiness.