Merge topic 'rm-cmLocalGenerator-Children'

867b5be8 cmLocalGenerator: Remove unused Children member.
6c832219 cmLocalGenerator: Implement child traversal in terms of cmState.
3fcf3837 Makefiles: Remove valueless cast.
223f4a66 cmLocalGenerator: Simplify condition.
ae026f54 cmState: Store Children states in parent state.

Source/cmState.h

@@ -65,6 +65,8 @@ public:
     void SetListFile(std::string const& listfile);
 
     std::string GetExecutionListFile() const;
+
+    std::vector<Snapshot> GetChildren();
     std::string GetEntryPointCommand() const;
     long GetEntryPointLine() const;