bitbake: hob: stop build without percentage shown

added a method in progressbar.py that doesn't update the
percentage in the progress bar shown in hob.

the call of the method is done in builder.py.

(Bitbake rev: 7ab5775fceda1055b86bdc3313fc4bf928bf5155)

Signed-off-by: Andrei Dinu <andrei.adrianx.dinu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/ui/crumbs/progressbar.py

@@ -43,6 +43,11 @@ class HobProgressBar (gtk.ProgressBar):
         text += " %.0f%%" % self.percentage
         self.set_text(text)
 
+    def set_stop_title(self, text=None):
+	if not text:
+	    text = ""
+	self.set_text(text)
+
     def reset(self):
         self.set_fraction(0)
         self.set_text("")