arm linuxulator: add "make sysent" generated files
connect arm linuxulator to top-level make sysent
Update dirdeps.mk and gendirdeps.mk
Update Makefile.depend files
arm linuxulator: add syscalls.conf and Makefile for "make sysent"
kbdmap: allow INDEX.keymaps to provide the dialog title
security.7: add caveat about interim sysctl paths from r355436
Extract code common to _vm_map_clip_start and _vm_map_clip_end into a function, vm_map_entry_clone, that can be invoked by each.
add a sanity check to the system call registration code
Make NOCLEAN an error instead of a warning