Merge branch 'V5-6-patches' into V5-7-patches

* V5-6-patches:
  Prepare for FreeBSD 11 and 12
diff --git a/Makefile.in b/Makefile.in
index 7dccf24..cfcdf73 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -20,7 +20,8 @@
 INCLUDESUBDIRHEADERS= aix.h bsd.h bsdi3.h bsdi4.h bsdi.h cygwin.h \
 	darwin.h darwin7.h darwin8.h darwin9.h darwin10.h dragonfly.h dynix.h \
 	freebsd2.h freebsd3.h freebsd4.h freebsd5.h freebsd6.h \
-	freebsd7.h freebsd8.h freebsd9.h freebsd10.h freebsd.h \
+	freebsd7.h freebsd8.h freebsd9.h freebsd10.h freebsd11.h \
+	freebsd12.h freebsd.h \
         generic.h \
 	hpux.h irix.h linux.h mingw32.h mips.h netbsd.h osf5.h \
 	openbsd.h openbsd5.h openbsd4.h \