Update to upstream
    	* Skip writing role attributes for policy.X and
    	* Indicate when boolean is indeed a tunable.
    	* Separate tunable from boolean during compile.
    	* Write and read TUNABLE flags in related
    	* Copy and check the cond_bool_datum_t.flags during link.
    	* Permanently discard disabled branches of tunables in
    	* Skip tunable identifier and cond_node_t in expansion.
    	* Create a new preserve_tunables flag
    	* Preserve tunables when required by semodule program.
    	* setools expects expand_module_avrules to be an exported
    	* tree: default make target to all not