Add overlay for config_speed_up_audio_on_mt_calls

Bug: 7612431
Change-Id: I530f17b98480b6e23da5879d299a636014be0199
Make extract-files.sh executable

Change-Id: Ie230bf764145f1073baf4e8bec96cfd9df54913f
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_device_lge_mako into cm-10.1