update hardwarecomposer-includes for cm-11

this needs fixing, as rotating the screen produces artifacts
update domx-headers for cm-11
update sepolicy for cm-11
update filesystem-config for cm-11
update camera includes for cm-11
update releasetool to cope with selinux-labels
WiFi fixes for cm-11
enable legacy alsa audio (does not lead to working audio yet)
do not use set_metadata for install-ZIP-files
re-add local WiFi-firmware as it is not included in cm-11 hardware/ti/wlan