Use std::abs() instead of abs()

This fixes a FTBFS on newer versions of GCC

clients/tde/src/widgets/tracewidget.cpp

@@ -692,7 +692,7 @@ void TraceData::drawTrace(TQPainter* p, int graticule_width, int graticule_heigh
 				rightEdgeIndex = numberOfSamples-1;
 			}
 		}
-		activeSamples = abs(rightEdgeIndex-leftEdgeIndex);
+		activeSamples = std::abs(rightEdgeIndex-leftEdgeIndex);
 		incr = (activeSamples/virtual_width)+1;
 		for (n=leftEdgeIndex; n<numberOfSamples-incr; n=n+incr) {
 			// Detect invalid samples and skip drawing of those samples
@@ -925,13 +925,13 @@ void CursorData::drawCursor(TQPainter* p, int graticule_width, int graticule_hei
 		}
 
 		if (orientation == TQt::Vertical) {
-			int x = (abs(((position)/(100.0))*(virtual_width))-offset);
+			int x = (std::abs(((position)/(100.0))*(virtual_width))-offset);
 			if ((x >= 0) && (x < graticule_width)) {
 				p->drawLine(x, 0, x, graticule_height);
 			}
 		}
 		else {
-			int y = abs(((position)/(100.0))*(virtual_height));
+			int y = std::abs(((position)/(100.0))*(virtual_height));
 			p->drawLine(0, y, graticule_width, y);
 		}
 	}
@@ -1148,7 +1148,7 @@ void GraticuleWidget::updateGraticule() {
 	TQRectF zoomBox = m_base->zoomBox();
 	if (!zoomBox.isNull()) {
 		// Translate zoombox coordinates to local drawing coordinates
-		TQRect drawingRect(abs(((zoomBox.x())/(100.0))*(virtualWidth()))-m_base->horizScrollOffset(), abs(((zoomBox.y())/(100.0))*(height())), abs(((zoomBox.width())/(100.0))*(virtualWidth())), abs(((zoomBox.height())/(100.0))*(height())));
+		TQRect drawingRect(std::abs(((zoomBox.x())/(100.0))*(virtualWidth()))-m_base->horizScrollOffset(), std::abs(((zoomBox.y())/(100.0))*(height())), std::abs(((zoomBox.width())/(100.0))*(virtualWidth())), std::abs(((zoomBox.height())/(100.0))*(height())));
 		p.fillRect(drawingRect, TQBrush(foregroundColor().dark(m_base->m_zoomBoxDarkness), TQt::BDiagPattern));
 	}
 
@@ -2662,4 +2662,4 @@ TraceWidget* TraceScrollWidget::traceWidget() {
 	return m_traceScrollView->m_traceWidget;
 }
 
-#include "tracewidget.moc"
+#include "tracewidget.moc"