Clarify the special section of LICENSE.txt
Clarify the special section of LICENSE.txt

During the 0.7.1 release vote this section was noted as confusing.

Change-Id: Ie8d0e6d62aedf9e53aaf06b2088d427f44be9c62
Reviewed-on: http://gerrit.cloudera.org:8080/2482
Tested-by: Kudu Jenkins
Reviewed-by: Mike Percy <e07a1fd797b473a9c849e618aa2ce06d8055760b@apache.org>

cloudera/kudu,andrwng/kudu,InspurUSA/kudu,helifu/kudu,helifu/kudu,helifu/kudu,EvilMcJerkface/kudu,EvilMcJerkface/kudu,helifu/kudu,andrwng/kudu,InspurUSA/kudu,andrwng/kudu,InspurUSA/kudu,InspurUSA/kudu,cloudera/kudu,EvilMcJerkface/kudu,cloudera/kudu,andrwng/kudu,EvilMcJerkface/kudu,helifu/kudu,cloudera/kudu,InspurUSA/kudu,helifu/kudu,EvilMcJerkface/kudu,EvilMcJerkface/kudu,andrwng/kudu,EvilMcJerkface/kudu,InspurUSA/kudu,InspurUSA/kudu,cloudera/kudu,helifu/kudu,andrwng/kudu,cloudera/kudu,helifu/kudu,InspurUSA/kudu,helifu/kudu,andrwng/kudu,EvilMcJerkface/kudu,cloudera/kudu,EvilMcJerkface/kudu,andrwng/kudu,cloudera/kudu,cloudera/kudu,InspurUSA/kudu,andrwng/kudu