syscall.2: SEE ALSO: add errno(3)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
syscalls.2: SEE ALSO: add errno(3)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
unix.7: grfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
proc.5: tfix

Reported-by: Huxiaoxiang <huxiaoxiang@huawei.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
mq_open.3: Place 'flags' constants in alphabetical order

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
mq_open.3: Document the O_CLOEXEC flag

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
namespaces(7): minor tweaks

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>