New script: copy-files-from-nightly.sh

    /system/vendor/firmware to distinguish it from the copy pulled
    from /system/firmware just in case they are supposed to be two
    different versions of the camera firmware, to support the FFC mod.

copy-files-from-nightly.sh: New file created from extract-files.sh
    that copies the needed files from an unpacked copy of the nightly
    build.

Change-Id: Ic36a1722251436889fdde025b86d000422dbbbd9