posix1e: Don't #include <sys/capability.h> on FreeBSD

The file is there by default, but deprecated and not a POSIX.1E
implementation.  While I'm at it, move the logic to posix1e.h so other
files aren't burdened with an extra include.

Fixes the other half of #40.

1 files changed, 1 insertions, 0 deletions

diff --git a/parse.c b/parse.c
index 28a9f88..b059fc4 100644
--- a/parse.c
+++ b/parse.c
@@ -22,6 +22,7 @@
 #include "exec.h"
 #include "expr.h"
 #include "mtab.h"
+#include "posix1e.h"
 #include "printf.h"
 #include "stat.h"
 #include "typo.h"