Update some URLs.

Reviewed-by: TrustMe

doc/qtcreator.qdoc

@@ -12,7 +12,7 @@
     the Linux, Mac OS X and Windows platforms.
 
     \note Please report bugs and suggestions to the Qt Software task tracker at
-    http://www.qtsoftware.com/developer/task-tracker. You can also join the
+    http://qt.nokia.com/developer/task-tracker. You can also join the
     qt-creator@trolltech.com mailing list. To subscribe, send a message with
     the word \e subscribe to qt-creator-request@trolltech.com. For more
     information on Qt mailing lists, visit http://lists.trolltech.com
@@ -1461,7 +1461,7 @@
 
     Open your project file (\c{.pro}) from the \gui{Projects} pane. Then,
     follow the guidelines in the
-    \l{http://doc.qtsoftware.com/latest/make-project-files.html#declaring-other-libraries}
+    \l{http://doc.trolltech.com/latest/make-project-files.html#declaring-other-libraries}
     {Declaring other Libraries} section of the Qt documentation.
 
     If your project successfully builds and links against the external library,

src/plugins/coreplugin/welcomemode.cpp

@@ -169,7 +169,7 @@ WelcomeMode::WelcomeMode() :
     //: Add localized feed here only if one exists
     m_d->rssFetcher->fetch(QUrl(tr("http://labs.trolltech.com/blogs/feed")));
 
-    m_d->ui.sitesTreeWidget->addItem(tr("Qt Software"), QLatin1String("http://www.trolltech.com"));
+    m_d->ui.sitesTreeWidget->addItem(tr("Qt Software"), QLatin1String("http://qt.nokia.com"));
     m_d->ui.sitesTreeWidget->addItem(tr("Qt Labs"), QLatin1String("http://labs.trolltech.com"));
     m_d->ui.sitesTreeWidget->addItem(tr("Qt Git Hosting"), QLatin1String("http://qt.gitorious.org"));
     m_d->ui.sitesTreeWidget->addItem(tr("Qt Centre"), QLatin1String("http://www.qtcentre.org"));
@@ -391,7 +391,7 @@ void WelcomeMode::slotOpenExample()
 void WelcomeMode::slotFeedback()
 {
     QDesktopServices::openUrl(QUrl(QLatin1String(
-            "http://www.trolltech.com/forms/feedback-forms/qt-creator-user-feedback/view")));
+            "http://qt.nokia.com/forms/feedback-forms/qt-creator-user-feedback/view")));
 }
 
 void WelcomeMode::slotCreateNewProject()