Move proprietary-files.sh to extract-files.sh

Change-Id: I6a56cb8783351f820d28f542e771c89b15895cf1
i9300: blow headphones away

Change-Id: Icea9796f28d20c0226a704ac249e062962acec07
Merge "Move proprietary-files.sh to extract-files.sh" into cm-10.1
Merge remote-tracking branch 'CM/cm-10.1' into jellybean