Update Holo Reference Images from build number 621493.

Change-Id: I0473a005731f93a409f0763a460a6f833d44d44e
diff --git a/tests/tests/holo/res/drawable-hdpi/holo_light_panel_calendar_view.png b/tests/tests/holo/res/drawable-hdpi/holo_light_panel_calendar_view.png
index ec3524d..6a66f1b 100644
--- a/tests/tests/holo/res/drawable-hdpi/holo_light_panel_calendar_view.png
+++ b/tests/tests/holo/res/drawable-hdpi/holo_light_panel_calendar_view.png
Binary files differ
diff --git a/tests/tests/holo/res/drawable-hdpi/holo_light_panel_calendar_view_feb.png b/tests/tests/holo/res/drawable-hdpi/holo_light_panel_calendar_view_feb.png
index 10e169a..85dfc7aa 100644
--- a/tests/tests/holo/res/drawable-hdpi/holo_light_panel_calendar_view_feb.png
+++ b/tests/tests/holo/res/drawable-hdpi/holo_light_panel_calendar_view_feb.png
Binary files differ
diff --git a/tests/tests/holo/res/drawable-ldpi/holo_panel_calendar_view.png b/tests/tests/holo/res/drawable-ldpi/holo_panel_calendar_view.png
index 659809a..66cecf2 100644
--- a/tests/tests/holo/res/drawable-ldpi/holo_panel_calendar_view.png
+++ b/tests/tests/holo/res/drawable-ldpi/holo_panel_calendar_view.png
Binary files differ
diff --git a/tests/tests/holo/res/drawable-ldpi/holo_panel_calendar_view_feb.png b/tests/tests/holo/res/drawable-ldpi/holo_panel_calendar_view_feb.png
index 2930e2f..f78a47a 100644
--- a/tests/tests/holo/res/drawable-ldpi/holo_panel_calendar_view_feb.png
+++ b/tests/tests/holo/res/drawable-ldpi/holo_panel_calendar_view_feb.png
Binary files differ