- 
由 Qiao Longfei 提交于* add ScaleOpVarTypeInference for scale op * scale op support scale selected rows * optimize code * use FindVar * use FindVarRecursive in ScaleOpVarTypeInference 11e01d9b
* add ScaleOpVarTypeInference for scale op * scale op support scale selected rows * optimize code * use FindVar * use FindVarRecursive in ScaleOpVarTypeInference
