Added setting to override the Qt style.

git-svn-id: http://yate.null.ro/svn/yate/trunk@2946 acf43c95-373e-0410-b603-e72c3f656dc1

clients/qt4/qt4client.cpp

@@ -2518,6 +2518,9 @@ void QtClient::cleanup()
 
 void QtClient::run()
 {
+    const char* style = Engine::config().getValue("client","style");
+    if (style && !QApplication::setStyle(QString::fromUtf8(style)))
+	Debug(ClientDriver::self(),DebugWarn,"Could not set Qt style '%s'",style);
     int argc = 0;
     char* argv =  0;
     m_app = new QApplication(argc,&argv);

conf.d/yate-qt4.conf.default

@@ -3,3 +3,9 @@
 
 [localsym]
 h323chan.yate=yes
+
+[client]
+;skin=default
+;style=
+;device=
+;greeting=Yate ${version} - ${release}