attr: fix LICENSE
attr: fix LICENSE

update license information to match upstream information for current
version. Details:
http://git.savannah.gnu.org/cgit/attr.git/tree/doc?id=v2.4.47
COPYING, COPYING.LIB

esben/base,sknsean/base,oe-lite/base,sknsean/base,moths/base,kimrhh/base,esben/base,oe-lite/base,kimrhh/base,moths/base,sknsean/base,moths/base,oe-lite/base,oe-lite/base,esben/base,esben/base,kimrhh/base,moths/base,sknsean/base,moths/base,esben/base,moths/base,sknsean/base,kimrhh/base,oe-lite/base,sknsean/base,oe-lite/base,esben/base,kimrhh/base,kimrhh/base