[OE-core] [jethro][PATCH v2] license.bbclass: fix host contamination warnings for license files

[Jagadeesh Krishnanjanappa]

>> We get below host contamination warnings of license files for
>> each recipe, when we try to create a separate ${PN}-lic package (which
>> contains license files), by setting LICENSE_CREATE_PACKAGE equal to "1"
>> in local.conf.
>>
>
> WARNING: Could not copy license file
> /data/poky-master/tmp/work/corei7-64-poky-linux/gmp/6.0.0-r0/gmp-6.0.0/COPYING.LESSERv3
> to
> /data/poky-master/tmp/work/corei7-64-poky-linux/gmp/6.0.0-r0/license-destdir/gmp/COPYING.LESSERv3:
> [Errno 1] Operation not permitted:
> '/data/poky-master/tmp/work/corei7-64-poky-linux/gmp/6.0.0-r0/license-destdir/gmp/COPYING.LESSERv3'
>

My earlier testing was done till do_package_qa  task, so could not
capture this warning. Will check and get back.

Thanks,
Jagadeesh

> Ross
>