Debugger: Merge debug mode and analyze mode

On the user-visible side, only the 'Analyze' mode button disappears,
and instead a combobox to switch between different tools in appears
in the Debug mode toolbar.

Internally, that's quite some re-organzition: The centralized
'Analyze mode is busy' flag is gone, allowing us to run e.g.
ClangStaticAnalyzer and MemCheck in parallel.

Analyzer tools and debugger now share the same mechanism to
generate/load/save dock widgets.

Analyzer tools now create and handle their own start/stop button
when appropriate. In general, Analyzer tools can create/handle more
than one run control at a time.

Further consolidation is possible, e.g. RunControl state handling
could be merged into the base ProjectExplorer::RunControl to
avoid the still existing duplication in ~15 instances.

Change-Id: I91e5940ebc4211f98056d507cf2f7b5f8efe7f07
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>

src/plugins/clangstaticanalyzer/clangstaticanalyzerunittests.cpp

@@ -44,7 +44,7 @@
 #include <QTimer>
 #include <QtTest>
 
-using namespace Analyzer;
+using namespace Debugger;
 using namespace ProjectExplorer;
 using namespace Utils;
 
@@ -89,7 +89,7 @@ void ClangStaticAnalyzerUnitTests::testProject()
     CppTools::Tests::ProjectOpenerAndCloser projectManager;
     const CppTools::ProjectInfo projectInfo = projectManager.open(projectFilePath, true);
     QVERIFY(projectInfo.isValid());
-    AnalyzerManager::selectAction(ClangStaticAnalyzerPerspectiveId, /* alsoRunIt = */ true);
+    Debugger::runAction(ClangStaticAnalyzerActionId);
     QSignalSpy waiter(m_analyzerTool, SIGNAL(finished(bool)));
     QVERIFY(waiter.wait(30000));
     const QList<QVariant> arguments = waiter.takeFirst();