debugger: make use of full source file list optional

(cherry picked from commit 8c52f5720c)

src/plugins/debugger/gdb/gdboptionspage.cpp

@@ -50,6 +50,8 @@ QWidget *GdbOptionsPage::createPage(QWidget *parent)
         m_ui.scriptFileChooser);
     m_group.insert(theDebuggerAction(GdbEnvironment),
         m_ui.environmentEdit);
+    m_group.insert(theDebuggerAction(UsePreciseBreakpoints), 
+        m_ui.checkBoxUsePreciseBreakpoints);
 
 #if 1
     m_ui.groupBoxPluginDebugging->hide();