overload function export to lua will error

[mirchd]

Hi,
when two overload member function has the same params nums, the "ifunction_overloaded.c" will judge the first style and break.
same as,
C++:
void Node:addChild(Node* child, int localZOrder, const std::string &name)
void Node:addChild(Node* child, int localZOrder, int tag)

lua:
paraentNode:addChild(subNode, 100, "subNodeName")

...

[pandamicro]

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