enable null pointer hardening by default

[Josh Boyer]

On Sat, 22 Dec 2007 03:55:49 -0800
Konrad Meyer <konrad at tylerc.org> wrote:

> Quoth David Woodhouse:
> > 
> > On Thu, 2007-12-13 at 10:58 -0500, Eric Paris wrote:
> > > -unsigned long mmap_min_addr;		/* 0 means no protection */
> > > +unsigned long mmap_min_addr = 65536;		/* protect first 64k */
> > 
> > 64kB would be 64000. If you mean 65536, it's 64KiB.
> 
> KiB don't exist. If you mean 65536, it's 64 kiB. :P

No, it's KiB.

http://www.iec.ch/zone/si/si_bytes.htm

And now that we're all done being pedantic, let's get back to fixing
bugs and stuff.

josh