abs.3: wfix

Reported-by: Walter Harms <wharms@bfs.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
readlink.2: Add free() call to example program

Reported-by: Jonny Grant <jg@jguk.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
timer_settime.2: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
unix.7: Various additions and rewordings

Notable changes:
* Clarify some details for pathname sockets.
* Add some advice on portably coding with pathname sockets.
* Note the "buggy" behavior for pathname sockets when
  the supplied pathname is 108 bytes (after a report by
  Tetsuo Handa).

Commented-by: Carlos O'Donell <carlos@systemhalted.org>
Commented-by: David Miller <davem@davemloft.net>
Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
readv.2: The raw preadv() and pwritev() syscalls split 'offset' into 2 arguments

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
pthread_rwlockattr_setkind_np.3: New page documenting pthread_rwlockattr_[sg]etkind_np(3)

Documents pthread_rwlockattr_setkind_np(3) and
pthread_rwlockattr_getkind_np(3).

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
pthread_rwlockattr_getkind_np.3: New link to pthread_rwlockattr_setkind_np(3)
pthread_rwlockattr_setkind_np.3: Edits my mtk

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Changes: Ready for 3.75

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
pthread_rwlockattr_setkind_np.3: srcfix: Add license tag

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
readlink.2, readv.2, pthread_rwlockattr_setkind_np.3, signal.7, unix.7: tstamp

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Removed trailing white space at end of lines
Ready for 3.75