Add CAP_BLOCK_SUSPEND Linux capability to system server

Add block suspend capability to system server to allow
system server to hold wake locks in more recent Linux
kernels.

Change-Id: If37e6b3db43cde6b185e699926a940f6717aa05b
Reduce total number of background apps for low memory devices

Due to memory constraints, we anyway cannot fit the default number
of BG apps. So instead of killing background apps to
free up memory when launching, start with an already
reduced background set of apps.

Another side-effect is that launch latencies also improve.
This change is for low memory devices. (512MB RAM or less)

Change-Id: I9de0cb1734c0a386fc47cde71723e5c16825f5a3
frameworks/base: Update timelapse quality check

Updated timelapse quality check to include WQVGA

Change-Id: Ic2ef9ad78cbbc2daa14ff5e95ff3cfb6e10a7529
libmediaplayer: update MIME types to include DASH support

Update MIME types to include DASH support

CRs-Fixed: 539815
Change-Id: I300e3bec1425ec1e1170bd489097237218c52baf