Clean headers in lib qmljs and plugins qmljstools, qmljseditor.

Change-Id: I3256db8f4d42b6326d986d754b45e6c6c2030839
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/qmljstools/qmljssemanticinfo.cpp

@@ -30,7 +30,10 @@
 
 #include "qmljssemanticinfo.h"
 
+#include <qmljs/parser/qmljsast_p.h>
 #include <qmljs/qmljsscopebuilder.h>
+#include <qmljs/qmljsscopechain.h>
+#include <qmljs/parser/qmljsengine_p.h>
 
 using namespace QmlJS;
 using namespace QmlJS::AST;