remove mac and xlc support leftovers

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>

src/3rdparty/harfbuzz/src/harfbuzz-shaper.h

@@ -44,11 +44,7 @@ HB_BEGIN_HEADER
    memory consumption as HB_CharAttributes and HB_GlyphAttributes will not have
    a 4 byte alignment
 */
-#ifdef  __xlC__
-typedef unsigned hb_bitfield;
-#else
 typedef hb_uint8 hb_bitfield;
-#endif
 
 typedef enum {
         HB_Script_Common,

src/gui/itemviews/qitemdelegate.cpp

@@ -1079,18 +1079,6 @@ QRect QItemDelegate::rect(const QStyleOptionViewItem &option,
 
 /*!
   \internal
-
-  Note that on Mac, if /usr/include/AssertMacros.h is included prior
-  to QItemDelegate, and the application is building in debug mode, the
-  check(assertion) will conflict with QItemDelegate::check.
-
-  To avoid this problem, add
-
-  #ifdef check
-	#undef check
-  #endif
-
-  after including AssertMacros.h
 */
 QRect QItemDelegate::check(const QStyleOptionViewItem &option,
                            const QRect &bounding, const QVariant &value) const

src/gui/kernel/qwidget.cpp

@@ -2087,8 +2087,6 @@ WId QWidget::effectiveWinId() const
     The style sheet contains a textual description of customizations to the
     widget's style, as described in the \l{Qt Style Sheets} document.
 
-    Since Qt 4.5, Qt style sheets fully supports Mac OS X.
-
     \warning Qt style sheets are currently not supported for custom QStyle
     subclasses. We plan to address this in some future release.
 
@@ -4762,7 +4760,6 @@ void QWidgetPrivate::render(QPaintDevice *target, const QPoint &targetOffset,
     if (paintRegion.isEmpty())
         return;
 
-#ifndef Q_WS_MAC
     QPainter *oldSharedPainter = inRenderWithPainter ? sharedPainter() : 0;
 
     // Use the target's shared painter if set (typically set when doing
@@ -4775,7 +4772,6 @@ void QWidgetPrivate::render(QPaintDevice *target, const QPoint &targetOffset,
                 setSharedPainter(targetPainter);
         }
     }
-#endif
 
     // Use the target's redirected device if set and adjust offset and paint
     // region accordingly. This is typically the case when people call render
@@ -4817,17 +4813,12 @@ void QWidgetPrivate::render(QPaintDevice *target, const QPoint &targetOffset,
         return;
     }
 
-#ifndef Q_WS_MAC
     // Render via backingstore.
     drawWidget(target, paintRegion, offset, flags, sharedPainter());
 
     // Restore shared painter.
     if (oldSharedPainter)
         setSharedPainter(oldSharedPainter);
-#else
-    // Render via backingstore (no shared painter).
-    drawWidget(target, paintRegion, offset, flags, 0);
-#endif
 }
 
 void QWidgetPrivate::paintSiblingsRecursive(QPaintDevice *pdev, const QObjectList& siblings, int index, const QRegion &rgn,
@@ -8704,15 +8695,6 @@ void QWidget::setParent(QWidget *parent, Qt::WindowFlags f)
             QApplication::sendEvent(parent, &e);
         }
 
-//### already hidden above ---> must probably do something smart on the mac
-// #ifdef Q_WS_MAC
-//             extern bool qt_mac_is_macdrawer(const QWidget *); //qwidget_mac.cpp
-//             if(!qt_mac_is_macdrawer(q)) //special case
-//                 q->setAttribute(Qt::WA_WState_Hidden);
-// #else
-//             q->setAttribute(Qt::WA_WState_Hidden);
-//#endif
-
         if (parent && d->sendChildEvents && d->polished) {
             QChildEvent e(QEvent::ChildPolished, this);
             QCoreApplication::sendEvent(parent, &e);