使ActionBarOverflow常显

N/A

这个Change是从4.4移植过来，去除了对硬件Menu的依赖

Change-Id: I2a02575b6a72d221ae443e378d33626eb46d1613
Ref-Id: Ifc5ff5bc9ca63a05af5582b12ee40aa0ad3eb2da
调整Toast动画和显示逻辑

Change-Id: Ieb7beddba7e1afb97c2eb711b3cf47cd52b3d2db
overlay values in MiuiHome for build break

Change-Id: Ibcad97e30249150b63c6798ff9276e0d44eb17f1
Revert "调整Toast动画和显示逻辑"

This reverts commit 0a2aa37b1594dbe377cc57ca98d0f3d45ab05224.