Return back a fix for Centos6/7 compilation issues not related to shadow ones

ASTNode.cpp

@@ -11,7 +11,7 @@ void ASTNodeList::removeLast()
 
 void ASTNodeList::removeFirst()
 {
-    m_nodes.erase(m_nodes.cbegin());
+    m_nodes.erase(m_nodes.begin());
 }
 
 

ASTree.cpp

@@ -34,7 +34,7 @@ static bool printClassDocstring = true;
 // shortcut for all top/pop calls
 static PycRef<ASTNode> StackPopTop(FastStack& stack)
 {
-    const auto node{ stack.top() };
+    const auto node(stack.top());
     stack.pop();
     return node;
 }