QMLJS: update to qmljsparser from Qt 5.6

Change-Id: I29a8e07b0b34aa5e8466021cbb71450687f7e11c
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

src/libs/qmljs/parser/qmljsengine_p.cpp

@@ -127,12 +127,12 @@ Lexer *Engine::lexer() const
 void Engine::setLexer(Lexer *lexer)
 { _lexer = lexer; }
 
-void Engine::setDirectives(Directives *directives)
-{ _directives = directives; }
-
 Directives *Engine::directives() const
 { return _directives; }
 
+void Engine::setDirectives(Directives *directives)
+{ _directives = directives; }
+
 MemoryPool *Engine::pool()
 { return &_pool; }