Fix the rest of the warnings about integer sign change with ICC

None of these change the code in any way. The solutions applied are:
 - change the type to a more appropriate one, if possible
 - use ~0 instead of -1 when flags were intended
 - cast a -1 to the proper type otherwise

Change-Id: Ifcc125528f32b8c8f9ab20bea103e2a693045bf8
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/breakwindow.cpp

@@ -96,7 +96,7 @@ private:
 };
 
 BreakpointDialog::BreakpointDialog(BreakpointModelId id, QWidget *parent)
-    : QDialog(parent), m_enabledParts(-1), m_previousType(UnknownType),
+    : QDialog(parent), m_enabledParts(~0), m_previousType(UnknownType),
       m_firstTypeChange(true)
 {
     m_ui.setupUi(this);