smf: switch to a tri-state for process-security properties true=on,false=off,nil=default

@@ -39,31 +39,31 @@
                 <property_group name='startd' type='framework'>
                   <propval name='duration' type='astring' value='transient' />
                 </property_group>
 
                 <property_group name='default' type='application'>
-                  <propval name='aslr' type='boolean' value='false' />
-                  <propval name='forbidnullmap' type='boolean' value='false' />
-                  <propval name='noexecstack' type='boolean' value='false' />
+                  <property name='aslr' type='boolean' />
+                  <property name='forbidnullmap' type='boolean' />
+                  <property name='noexecstack' type='boolean' />
 
                   <propval name='value_authorization' type='astring'
                            value='solaris.smf.value.process-security' />
                 </property_group>
 
                 <property_group name='lower' type='application'>
-                  <propval name='aslr' type='boolean' value='false' />
-                  <propval name='forbidnullmap' type='boolean' value='false' />
-                  <propval name='noexecstack' type='boolean' value='false' />
+                  <property name='aslr' type='boolean' />
+                  <property name='forbidnullmap' type='boolean' />
+                  <property name='noexecstack' type='boolean' />
 
                   <propval name='value_authorization' type='astring'
                            value='solaris.smf.value.process-security' />
                 </property_group>
 
                 <property_group name='upper' type='application'>
-                  <propval name='aslr' type='boolean' value='true' />
-                  <propval name='forbidnullmap' type='boolean' value='true' />
-                  <propval name='noexecstack' type='boolean' value='true' />
+                  <property name='aslr' type='boolean' />
+                  <property name='forbidnullmap' type='boolean' />
+                  <property name='noexecstack' type='boolean' />
 
                   <propval name='value_authorization' type='astring'
                            value='solaris.smf.value.process-security' />
                 </property_group>