Optimized png for xhdpi & xxhdpi

optipng -nc -nb -o7

Conflicts:
	core/res/res/drawable-xhdpi/btn_check_off_disabled_focused_holo_dark.png
	core/res/res/drawable-xhdpi/btn_check_off_disabled_focused_holo_light.png
	core/res/res/drawable-xhdpi/btn_check_off_focused_holo_light.png
	core/res/res/drawable-xhdpi/btn_check_on_disabled_focused_holo_dark.png
	core/res/res/drawable-xhdpi/btn_check_on_disabled_focused_holo_light.png
	core/res/res/drawable-xhdpi/btn_check_on_focused_holo_dark.png
	core/res/res/drawable-xhdpi/btn_check_on_focused_holo_light.png
	core/res/res/drawable-xhdpi/btn_check_on_holo_dark.png
	core/res/res/drawable-xhdpi/btn_check_on_holo_light.png
	core/res/res/drawable-xhdpi/btn_radio_off_disabled_focused_holo_dark.png
	core/res/res/drawable-xhdpi/btn_radio_off_disabled_focused_holo_light.png
	core/res/res/drawable-xhdpi/btn_radio_off_focused_holo_dark.png
	core/res/res/drawable-xhdpi/btn_radio_off_focused_holo_light.png
	core/res/res/drawable-xhdpi/btn_radio_on_disabled_focused_holo_dark.png
	core/res/res/drawable-xhdpi/btn_radio_on_disabled_focused_holo_light.png
	core/res/res/drawable-xhdpi/btn_radio_on_focused_holo_dark.png
	core/res/res/drawable-xhdpi/btn_radio_on_focused_holo_light.png
	core/res/res/drawable-xhdpi/btn_radio_on_holo_dark.png
	core/res/res/drawable-xhdpi/btn_radio_on_holo_light.png
	core/res/res/drawable-xhdpi/fastscroll_thumb_default_holo.png
	core/res/res/drawable-xhdpi/fastscroll_thumb_pressed_holo.png
	core/res/res/drawable-xhdpi/list_activated_holo.9.png
	core/res/res/drawable-xhdpi/progress_primary_holo_dark.9.png
	core/res/res/drawable-xhdpi/progress_primary_holo_light.9.png
	core/res/res/drawable-xhdpi/progress_secondary_holo_dark.9.png
	core/res/res/drawable-xhdpi/progress_secondary_holo_light.9.png
	core/res/res/drawable-xhdpi/progressbar_indeterminate_holo1.png
	core/res/res/drawable-xhdpi/progressbar_indeterminate_holo2.png
	core/res/res/drawable-xhdpi/progressbar_indeterminate_holo3.png
	core/res/res/drawable-xhdpi/progressbar_indeterminate_holo4.png
	core/res/res/drawable-xhdpi/progressbar_indeterminate_holo5.png
	core/res/res/drawable-xhdpi/progressbar_indeterminate_holo6.png
	core/res/res/drawable-xhdpi/progressbar_indeterminate_holo7.png
	core/res/res/drawable-xhdpi/progressbar_indeterminate_holo8.png
	core/res/res/drawable-xhdpi/scrubber_control_disabled_holo.png
	core/res/res/drawable-xhdpi/scrubber_control_focused_holo.png
	core/res/res/drawable-xhdpi/scrubber_control_normal_holo.png
	core/res/res/drawable-xhdpi/scrubber_control_pressed_holo.png
	core/res/res/drawable-xhdpi/scrubber_primary_holo.9.png
	core/res/res/drawable-xhdpi/scrubber_secondary_holo.9.png
	core/res/res/drawable-xhdpi/scrubber_track_holo_dark.9.png
	core/res/res/drawable-xhdpi/switch_thumb_activated_holo_dark.9.png
	core/res/res/drawable-xhdpi/switch_thumb_activated_holo_light.9.png
	core/res/res/drawable-xhdpi/tab_selected_focused_holo.9.png
	core/res/res/drawable-xhdpi/tab_selected_holo.9.png
	core/res/res/drawable-xhdpi/tab_selected_pressed_holo.9.png
	core/res/res/drawable-xhdpi/tab_unselected_focused_holo.9.png
	core/res/res/drawable-xhdpi/tab_unselected_holo.9.png
	core/res/res/drawable-xhdpi/tab_unselected_pressed_holo.9.png
	core/res/res/drawable-xhdpi/text_select_handle_left.png
	core/res/res/drawable-xhdpi/text_select_handle_middle.png
	core/res/res/drawable-xhdpi/text_select_handle_right.png
	core/res/res/drawable-xhdpi/textfield_activated_holo_dark.9.png
	core/res/res/drawable-xhdpi/textfield_activated_holo_light.9.png
	core/res/res/drawable-xhdpi/textfield_focused_holo_dark.9.png
	core/res/res/drawable-xhdpi/textfield_focused_holo_light.9.png
	core/res/res/drawable-xhdpi/textfield_multiline_activated_holo_dark.9.png
	core/res/res/drawable-xhdpi/textfield_multiline_activated_holo_light.9.png
	core/res/res/drawable-xhdpi/textfield_multiline_focused_holo_dark.9.png
	core/res/res/drawable-xhdpi/textfield_multiline_focused_holo_light.9.png
	core/res/res/drawable-xxhdpi/ab_transparent_dark_holo.9.png
	core/res/res/drawable-xxhdpi/ab_transparent_light_holo.9.png
	core/res/res/drawable-xxhdpi/btn_check_off_disabled_focused_holo_dark.png
	core/res/res/drawable-xxhdpi/btn_check_off_disabled_focused_holo_light.png
	core/res/res/drawable-xxhdpi/btn_check_off_focused_holo_dark.png
	core/res/res/drawable-xxhdpi/btn_check_off_focused_holo_light.png
	core/res/res/drawable-xxhdpi/btn_check_on_disabled_focused_holo_dark.png
	core/res/res/drawable-xxhdpi/btn_check_on_disabled_focused_holo_light.png
	core/res/res/drawable-xxhdpi/btn_check_on_focused_holo_dark.png
	core/res/res/drawable-xxhdpi/btn_check_on_holo_dark.png
	core/res/res/drawable-xxhdpi/btn_check_on_holo_light.png
	core/res/res/drawable-xxhdpi/btn_radio_off_disabled_focused_holo_dark.png
	core/res/res/drawable-xxhdpi/btn_radio_off_disabled_focused_holo_light.png
	core/res/res/drawable-xxhdpi/btn_radio_off_focused_holo_dark.png
	core/res/res/drawable-xxhdpi/btn_radio_off_focused_holo_light.png
	core/res/res/drawable-xxhdpi/btn_radio_on_disabled_focused_holo_dark.png
	core/res/res/drawable-xxhdpi/btn_radio_on_disabled_focused_holo_light.png
	core/res/res/drawable-xxhdpi/btn_radio_on_focused_holo_dark.png
	core/res/res/drawable-xxhdpi/btn_radio_on_focused_holo_light.png
	core/res/res/drawable-xxhdpi/btn_radio_on_holo_dark.png
	core/res/res/drawable-xxhdpi/btn_radio_on_holo_light.png
	core/res/res/drawable-xxhdpi/cab_background_bottom_holo_dark.9.png
	core/res/res/drawable-xxhdpi/cab_background_bottom_holo_light.9.png
	core/res/res/drawable-xxhdpi/cab_background_top_holo_dark.9.png
	core/res/res/drawable-xxhdpi/cab_background_top_holo_light.9.png
	core/res/res/drawable-xxhdpi/fastscroll_thumb_default_holo.png
	core/res/res/drawable-xxhdpi/fastscroll_thumb_pressed_holo.png
	core/res/res/drawable-xxhdpi/list_activated_holo.9.png
	core/res/res/drawable-xxhdpi/progress_primary_holo_dark.9.png
	core/res/res/drawable-xxhdpi/progress_primary_holo_light.9.png
	core/res/res/drawable-xxhdpi/progress_secondary_holo_dark.9.png
	core/res/res/drawable-xxhdpi/progress_secondary_holo_light.9.png
	core/res/res/drawable-xxhdpi/progressbar_indeterminate_holo1.png
	core/res/res/drawable-xxhdpi/progressbar_indeterminate_holo2.png
	core/res/res/drawable-xxhdpi/progressbar_indeterminate_holo3.png
	core/res/res/drawable-xxhdpi/progressbar_indeterminate_holo4.png
	core/res/res/drawable-xxhdpi/progressbar_indeterminate_holo5.png
	core/res/res/drawable-xxhdpi/progressbar_indeterminate_holo6.png
	core/res/res/drawable-xxhdpi/progressbar_indeterminate_holo7.png
	core/res/res/drawable-xxhdpi/progressbar_indeterminate_holo8.png
	core/res/res/drawable-xxhdpi/scrubber_control_disabled_holo.png
	core/res/res/drawable-xxhdpi/scrubber_control_focused_holo.png
	core/res/res/drawable-xxhdpi/scrubber_control_normal_holo.png
	core/res/res/drawable-xxhdpi/scrubber_control_pressed_holo.png
	core/res/res/drawable-xxhdpi/scrubber_primary_holo.9.png
	core/res/res/drawable-xxhdpi/scrubber_secondary_holo.9.png
	core/res/res/drawable-xxhdpi/scrubber_track_holo_dark.9.png
	core/res/res/drawable-xxhdpi/switch_thumb_activated_holo_dark.9.png
	core/res/res/drawable-xxhdpi/switch_thumb_activated_holo_light.9.png
	core/res/res/drawable-xxhdpi/tab_selected_focused_holo.9.png
	core/res/res/drawable-xxhdpi/tab_selected_holo.9.png
	core/res/res/drawable-xxhdpi/tab_selected_pressed_holo.9.png
	core/res/res/drawable-xxhdpi/tab_unselected_focused_holo.9.png
	core/res/res/drawable-xxhdpi/tab_unselected_holo.9.png
	core/res/res/drawable-xxhdpi/tab_unselected_pressed_holo.9.png
	core/res/res/drawable-xxhdpi/text_select_handle_left.png
	core/res/res/drawable-xxhdpi/text_select_handle_middle.png
	core/res/res/drawable-xxhdpi/text_select_handle_right.png
	core/res/res/drawable-xxhdpi/textfield_activated_holo_dark.9.png
	core/res/res/drawable-xxhdpi/textfield_activated_holo_light.9.png
	core/res/res/drawable-xxhdpi/textfield_focused_holo_dark.9.png
	core/res/res/drawable-xxhdpi/textfield_focused_holo_light.9.png
	core/res/res/drawable-xxhdpi/textfield_multiline_activated_holo_dark.9.png
	core/res/res/drawable-xxhdpi/textfield_multiline_activated_holo_light.9.png
	core/res/res/drawable-xxhdpi/textfield_multiline_focused_holo_dark.9.png
	core/res/res/drawable-xxhdpi/textfield_multiline_focused_holo_light.9.png
	core/res/res/drawable-xxhdpi/textfield_search_right_selected_holo_dark.9.png
	core/res/res/drawable-xxhdpi/textfield_search_right_selected_holo_light.9.png
	core/res/res/drawable-xxhdpi/textfield_search_selected_holo_dark.9.png
	core/res/res/drawable-xxhdpi/textfield_search_selected_holo_light.9.png
	packages/SystemUI/res/drawable-xhdpi/stat_sys_signal_0.png
	packages/SystemUI/res/drawable-xhdpi/stat_sys_signal_0_fully.png
	packages/SystemUI/res/drawable-xhdpi/stat_sys_signal_1_fully.png
	packages/SystemUI/res/drawable-xhdpi/stat_sys_signal_2_fully.png
	packages/SystemUI/res/drawable-xhdpi/stat_sys_signal_3_fully.png
	packages/SystemUI/res/drawable-xhdpi/stat_sys_signal_4_fully.png
	packages/SystemUI/res/drawable-xxhdpi/stat_sys_signal_0.png
	packages/SystemUI/res/drawable-xxhdpi/stat_sys_signal_0_fully.png
	packages/SystemUI/res/drawable-xxhdpi/stat_sys_signal_1_fully.png
	packages/SystemUI/res/drawable-xxhdpi/stat_sys_signal_2_fully.png
	packages/SystemUI/res/drawable-xxhdpi/stat_sys_signal_3_fully.png
	packages/SystemUI/res/drawable-xxhdpi/stat_sys_signal_4_fully.png