style cleanup: prefer ' for strings

Tomeu prefers ' for strings, so let's use it wherever we don't have a good
reason to use ".

Reviewed-by: James Cameron <quozl@laptop.org>
Acked-by: Simon Schampijer <simon@laptop.org>
CC: Aleksey Lim <alsroot@member.fsf.org>

tests/graphics/common.py

@@ -45,7 +45,7 @@ class TestPalette(Test):
 class TestRunner(object):
     def run(self, test):
         window = gtk.Window()
-        window.connect("destroy", lambda w: gtk.main_quit())
+        window.connect('destroy', lambda w: gtk.main_quit())
         window.add(test)
         test.show()
 

tests/graphics/hipposcalability.py

@@ -47,5 +47,5 @@ gobject.idle_add(idle_cb)
 
 test.show()
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     common.main(test)

tests/graphics/iconcache.py

@@ -59,12 +59,12 @@ for d in data:
     test.pack_start(icon)
     icon.show()
 
-button = gtk.Button("mec mac")
+button = gtk.Button('mec mac')
 test.pack_start(button)
 button.connect('activate', _button_activated_cb)
 button.show()
 
 test.show()
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     common.main(test)

tests/graphics/iconwidget.py

@@ -83,5 +83,5 @@ test.show()
 #import gobject
 #gobject.idle_add(idle_cb)
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     common.main(test)

tests/graphics/ticket2855.py

@@ -55,5 +55,5 @@ radio.show()
 palette.set_content(box)
 box.show()
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     common.main(test)

tests/graphics/ticket2999.py

@@ -34,5 +34,5 @@ text_view.props.buffer.props.text = 'Blah blah blah, blah blah blah.'
 test.pack_start(text_view)
 text_view.show()
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     common.main(test)

tests/graphics/ticket3000.py

@@ -44,5 +44,5 @@ toolbar.insert(button, -1)
 button.show()
 
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     common.main(test)

tests/graphics/toolbarpalettes.py

@@ -61,5 +61,5 @@ vbox.show()
 
 test.show()
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     common.main(test)

tests/graphics/tray.py

@@ -78,5 +78,5 @@ vbox.show()
 
 test.show()
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     common.main(test)

tests/lib/test_mime.py

@@ -80,5 +80,5 @@ class TestMime(unittest.TestCase):
         self.assertEqual(mime_type, 'text/plain')
 
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     unittest.main()