all FEATURE action data manipulation and validation

For YIN only.
diff --git a/src/libyang.h b/src/libyang.h
index 9e4055e..e96fc06 100644
--- a/src/libyang.h
+++ b/src/libyang.h
@@ -1202,6 +1202,7 @@
     LYVE_NOREQINS,     /**< required instance does not exits (data) */
     LYVE_NOLEAFREF,    /**< leaf pointed to by leafref does not exist (data) */
     LYVE_NOMANDCHOICE, /**< no mandatory choice case branch exists (data) */
+    LYVE_INACT,        /**< action contains some other node than container or list with keys (data) */
 
     LYVE_XPATH_INTOK,  /**< unexpected XPath token */
     LYVE_XPATH_EOF,    /**< unexpected end of an XPath expression */