Launcher: Fix overflow menu button

On rotate screen, at all apps drawer in Trebuchet, the overflow menu icon overlays the market
icon. This changes contains:

1.- Modify the app_customize_pane layout to avoid that overflow button and market button overlap
each other.
2.- Move updateOverflowMenuButton() from runNewAppsAnimation to bindAllApplications. The overflow
button need to be updated every time the all app drawer change.
3.- Fix preferencesVisible assignment. If we are in CM and launcher is Trebuchet and device
has not permanent button, the overflow menu should be displayed.
4.- Fix onCreateOptionsMenu. On AllAppsVisible the menu should be recreated always
5.- Buttons padding (market and overflow) are reduced to avoid a bad visual effect when
both buttons are one beside the other.

Before: https://www.dropbox.com/s/i9vgp6sh35nsnjt/before_phone_portrait.png
After:  https://www.dropbox.com/s/es5j35ny1jf9ey8/after_phone_portrait.png
        https://www.dropbox.com/s/6sztai1hq0w9ngr/after_phone_landscape.png

Patchset 2: Remove unnecessary invalidateOptionsMenu() call

Change-Id: I7ec08ff00ed4705846c0b46639965899b16a143d
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Improve scroll responsiveness.

1) mUsePagingTouchSlop set to false.
   Applist scroll now scrolls with the same
   thresholds used by homescreen scrolling.

2) Early start of scroll as soon as we
   detect that it's okay to scroll.
   Eliminates waiting for next vsync
   and starts scrolling in the current cycle.
   instead of the next.

Above changes help in reducing first touch to
first displacement latencies in scroll usecases.
Improves scroll responsiveness.

Change-Id: Ib45a361b9b6275e64d0a5b5603aa15fdd386a5f8
Merge remote branch 'cm/cm-10.1' into cm-10.1