用CIMExporter分别处理读到的线路，开关，变压器等元件。

Signed-off-by: facat@lab.com <facat@lab.com>

testHasttable/element/switch.cpp

@@ -1,6 +1,6 @@
 #include "switch.h"
 
-Switch::Switch(const QPair<QString,QString>& fromTo):Branch(fromTo.first,fromTo.second)
+Switch::Switch(const QPair<QString,QString>& fromTo, QObject *parent):Branch(fromTo.first,fromTo.second)
 {
     this->extract();
 }