QbsProjectManager: Fix SOFT ASSERT: "future.isFinished()"

...in file qbsproject.cpp, line 940.

The assert can be triggered with e.g.:
 1. Load a bigger qbs project, e.g. qtcreator.qbs.
 2. Trigger project build as soon as possible.
 3. Cancel the "Parsing C/C++" operation.
 4. Wait until the build finished and the assert occurs.

This happens because CppModelManager::updateProjectInfo() since

  commit  536ccc8a87
  CppTools: Fix incompletely indexed project

will check whether the previous indexer run was canceled or not. If it
was canceled, it will trigger a full-reindexing of the project.

Updating the compiler call data is a special case and it should never
trigger an indexing operation, so introduce a dedicated update function
for this case.

Change-Id: I456945ccf2bf697aaeada572ed87f3acb21a5eaf
Reviewed-by: Christian Kandeler <christian.kandeler@theqtcompany.com>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/cpptools/cppmodelmanager.h

@@ -29,6 +29,7 @@
 #include "cpptools_global.h"
 
 #include "cppmodelmanagersupport.h"
+#include "projectinfo.h"
 #include "projectpart.h"
 #include "projectpartheaderpath.h"
 
@@ -56,7 +57,6 @@ class CppEditorDocumentHandle;
 class CppIndexingSupport;
 class SymbolFinder;
 class WorkingCopy;
-class ProjectInfo;
 
 namespace Internal {
 class CppSourceProcessor;
@@ -95,6 +95,8 @@ public:
     QList<ProjectInfo> projectInfos() const;
     ProjectInfo projectInfo(ProjectExplorer::Project *project) const;
     QFuture<void> updateProjectInfo(const ProjectInfo &newProjectInfo);
+    ProjectInfo updateCompilerCallDataForProject(ProjectExplorer::Project *project,
+                                                 ProjectInfo::CompilerCallData &compilerCallData);
 
     /// \return The project part with the given project file
     ProjectPart::Ptr projectPartForId(const QString &projectPartId) const;