can analyze some of the other programs (since it runs out of
time analyzing them all).

calling exit_cleanup() (which is a safer way to avoid an infinite
loop when the exit code uses the log functions than allowing the
_exit_cleanup() function to return back into our code).

- Mark _exit_cleanup() with NORETURN.
- Don't ever return from _exit_cleanup().

- Added a NORETURN define to mark a function that never returns.

to get_tmpname().

(so we don't need to keep adding variable-type strings).

to to substitute a chmod that will work everywhere.

- Cleaned up some trailing whitespace.

longer for MAXPATHLEN.  Also fixed a couple spots nearby that were
erroneously treating pointer "cp" as a '\0'-terminated string.

they were not yet safe (I'll consider similar changes for the next
release).

directory-creation event.

destination directory.

prefix from each --*-dest option's path.

directory, and made one of those do a --dry-run test before
the regular test.

  effect, we now stat the link-dest file instead of the non-existent
  destination file.
- Use int32 for the index variables.

file in on of the extra basis dirs, make a note of which basis dir
we would have used in the hard-link with the destination file.

other values explicitly 32-bit so that the total size can't be
larger than the other struct we're in a union with.