> i've committed this slightly tweaked version

Unfortunately, it looks like you accidently changed an "#ifdef"
into a "#ifndef".  The build is failing for me. Fixed thusly.

gdb/ChangeLog:

        * darwin-nat.c: Fix typo in TASK_DYLD_INFO_COUNT macro test
        used to decide whether to define darwin_read_dyld_info or not.

You'll might want to ask your collegue/friend to rebuild to make sure
it works. I suspect it wouldn't have worked before my patch for him
either.

Cheers,
-- 
Joel