Merge pull request #9492 from cmonr/travisCI-fix-license_check

Travis CI: Fix for license check job

.travis.yml

@@ -302,9 +302,9 @@ matrix:
     - env:
         - NAME=licence_check
       script:
-        - echo 'Checking that there is no GPL licence text in code'
-        - ! git grep -q --ignore-case "gnu general public";
-        - ! git grep -q --ignore-case "gnu library general public";
+        - >-
+          ! grep --recursive --max-count=100 --ignore-case --exclude .travis.yml \
+          "gnu general\|gnu lesser\|lesser general\|public license"
 
     - env:
         - NAME=include_check