aqhome-react: added more logical units (or, and, xor). started "module" unit.

module units now are units created from previous networks of units
thus introducing nested units.

apps/aqhome-react/units/0BUILD

@@ -37,7 +37,7 @@
     </setVar>
 
     <headers dist="true" >
-      u_or.h
+      u_logical.c
       u_passthrough.h
       u_varchanges.h
       u_valuefilter.h
@@ -47,11 +47,13 @@
       u_stabilize.h
       u_valueset.h
       u_zeroposnegstring.h
+      u_module.h
+      u_module_p.h
     </headers>
   
     <sources>
       $(local/typefiles)
-      u_or.c
+      u_logical.c
       u_passthrough.c
       u_varchanges.c
       u_valuefilter.c
@@ -61,6 +63,7 @@
       u_stabilize.c
       u_valueset.c
       u_zeroposnegstring.c
+      u_module.c
     </sources>
 
     <useTargets>