Major Description
As per http://www.apache.org/dev/release.html#distributing-code-under-several-licenses
If An Artifact Contains Code Under Several Licenses, Should It Contain Several License Files?
When an artifact contains code under several licenses, the LICENSE file should contain details of all these licenses. For each component which is not Apache licensed, details of the component should be appended to the LICENSE file. The component license itself may also be appended, or it may be stored elsewhere in the artifact with a pointer to it from the LICENSE file, e.g. if the license is long.
An example showing appended licenses.- https://svn.apache.org/repos/asf/httpd/httpd/trunk/LICENSE