Fix build: capability.h has been renamed to capsicum.h on all supported

OSVERSIONs.  For some reason the OSVERSION check was not working but
since it is OBE there is no reason to debug that.

See https://svnweb.freebsd.org/base?view=revision&revision=263232 .

This change needs to be submitted upstream.

devel/py-pycapsicum/files/patch-__pycapsicum.c

@@ -0,0 +1,14 @@
+--- _pycapsicum.c.orig	2019-09-01 13:05:23 UTC
++++ _pycapsicum.c
+@@ -32,11 +32,7 @@
+ #include <fcntl.h>
+ 
+ #include "Python.h"
+-#if OSVERSION < 1020000
+-#include "sys/capability.h"
+-#else
+ #include "sys/capsicum.h"
+-#endif
+ #include "sys/caprights.h"
+ #include "structmember.h"
+