Looking at the current vlc_GetCPUCount() function this can be simplified.
The sysconf(4) variable _SC_NPROCESSORS_CONF is available for OS X and OpenBSD.
The change as is also adds FreeBSD and NetBSD support to vlc_GetCPUCount().
Signed-off-by: Rafaël Carré <funman@videolan.org>
(cherry picked from commit 3a50918d89ebd66d43af99b8750fe8a1558f8b92)
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>