pybootchartgui: Make "Show more" show all processes

While "Show more" is enabled, all processes are shown, regardless of
--mintime.

This also has the added benefit of making the first shown bar start at
its correct offset from the start time, rather than always starting at
0.

(From OE-Core rev: 5f1b8730f90099c0f73a6b08599990ee71e831b5)

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/pybootchartgui/pybootchartgui/gui.py

@@ -121,6 +121,8 @@ class PyBootchartWidget(gtk.DrawingArea):
 
     def show_toggled(self, button):
         self.options.app_options.show_all = button.get_property ('active')
+        self.chart_width, self.chart_height = draw.extents(self.options, self.xscale, self.trace)
+        self._set_scroll_adjustments(self.hadj, self.vadj)
         self.queue_draw()
 
     POS_INCREMENT = 100