Debugger: Remove unneeded qualifications

Mostly done using the following ruby script:
Dir.glob('**/*.cpp').each { |file|
  next if file =~ %r{src/shared/qbs|/qmljs/}
  s = File.read(file)
  s.scan(/^using namespace (.*);$/) {
    ns = $1
    t = s.gsub(/^(.*)\b#{ns}::((?!Const)[A-Z])/) { |m|
      before = $1
      char = $2
      if before =~ /"|\/\/|\\|using|SIGNAL|SLOT|Q_/
        m
      else
        before + char
      end
    }
    if t != s
      puts file
      File.open(file, 'w').write(t)
    end
  }
}

Change-Id: I1aa1a2b6ccbafeb1a8f3053fffa39b3f96992591
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/debugger/memoryagent.cpp

@@ -189,7 +189,7 @@ bool MemoryAgent::doCreateBinEditor(const MemoryViewSetupData &data)
 void MemoryAgent::createBinEditor(const MemoryViewSetupData &data)
 {
     if (!doCreateBinEditor(data))
-        Core::AsynchronousMessageBox::warning(
+        AsynchronousMessageBox::warning(
             tr("No Memory Viewer Available"),
             tr("The memory contents cannot be shown as no viewer plugin "
                "for binary data has been loaded."));
@@ -234,7 +234,7 @@ void MemoryAgent::handleWatchpointRequest(quint64 address, uint size)
 
 void MemoryAgent::updateContents()
 {
-    foreach (const QPointer<Core::IEditor> &e, m_editors)
+    foreach (const QPointer<IEditor> &e, m_editors)
         if (e)
             MemoryView::binEditorUpdateContents(e->widget());
     // Update all views except register views, which trigger on