sys/limits.h shouldn't be in the exception_lists anymore.
Move zfd(7D) out of brand/lx and into system/zones, plus some brand/lx header
file removals.

@@ -983,5 +983,12 @@
 
 #
 # debugging program for libadutils
 #
 usr/bin/test-getdc
+
+#
+# LX Brand internals
+#
+
+usr/include/sys/inotify.h
+usr/include/sys/zfd.h