Valgrind: Add gui option "Detect self-modifying code"

Setting this option to e.g. "Everywhere Except in File-backend Mappings"
allows to 'valgrind' Qt Creator itself.

Without that option the valgrind process will die if certain code paths
are executed.

Change-Id: I8888456d324a25ce092f0b0128407adf2159f496
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/valgrind/valgrindsettings.h

@@ -51,6 +51,13 @@ class ValgrindBaseSettings : public ProjectExplorer::ISettingsAspect
     Q_OBJECT
 
 public:
+    enum SelfModifyingCodeDetection {
+        DetectSmcNo,
+        DetectSmcStackOnly,
+        DetectSmcEverywhere,
+        DetectSmcEverywhereButFile
+    };
+
     ValgrindBaseSettings() {}
 
     void toMap(QVariantMap &map) const;
@@ -64,15 +71,19 @@ signals:
  */
 public:
     QString valgrindExecutable() const;
+    SelfModifyingCodeDetection selfModifyingCodeDetection() const;
 
 public slots:
     void setValgrindExecutable(const QString &);
+    void setSelfModifyingCodeDetection(int);
 
 signals:
     void valgrindExecutableChanged(const QString &);
+    void selfModifyingCodeDetectionChanged(int);
 
 private:
     QString m_valgrindExecutable;
+    SelfModifyingCodeDetection m_selfModifyingCodeDetection;
 
 
 /**