Fix const warning in the genheaders script as a result of
changes to the headers, as noted here:

http://linux.derkeiler.com/Mailing-Lists/Kernel/2010-03/msg03977.htmlReported-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NJames Morris <jmorris@namei.org>

If a permission name is long enough the selinux class definition generation
tool will go into a infinite loop.  This is because it's macro max() is
fooled into thinking it is dealing with unsigned numbers.  This patch makes
sure the macro always uses signed number so 1 > -1.
Signed-off-by: NEric Paris <eparis@redhat.com>
Signed-off-by: NJames Morris <jmorris@namei.org>

scripts/selinux/genheaders/genheaders.c:20: warning: no previous prototype
for ?usage?
scripts/selinux/genheaders/genheaders.c:26: warning: no previous prototype
for ?stoupperx?
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Acked-by: NWANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: NJames Morris <jmorris@namei.org>

Add a simple utility (scripts/selinux/genheaders) and invoke it to
generate the kernel-private class and permission indices in flask.h
and av_permissions.h automatically during the kernel build from the
security class mapping definitions in classmap.h.  Adding new kernel
classes and permissions can then be done just by adding them to classmap.h.
Signed-off-by: NStephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: NJames Morris <jmorris@namei.org>