Clang: Add file name to qtc.clangbackend.jobs output

This helps to overview debug output in case several files are involved.

Change-Id: I12ee23bd7cec4cd344746ef1323afb3f0ab54d4b
Reviewed-by: Marco Bubke <marco.bubke@qt.io>

src/tools/clangbackend/source/clangdocumentprocessor.cpp

@@ -35,6 +35,8 @@
 #include <utils/algorithm.h>
 #include <utils/qtcassert.h>
 
+#include <QFileInfo>
+
 namespace ClangBackEnd {
 
 class DocumentProcessorData
@@ -47,7 +49,7 @@ public:
                           ClangCodeModelClientInterface &client)
         : document(document)
         , documents(documents)
-        , jobs(documents, unsavedFiles, projects, client)
+        , jobs(documents, unsavedFiles, projects, client, QFileInfo(document.filePath()).fileName())
         , supportiveTranslationUnitInitializer(document, jobs)
     {
         const auto isDocumentClosedChecker = [this](const Utf8String &filePath,