Skip upgrade from old ASDF versions on MKCL. It's a brave new world for it.
Remove unnecessary (declare (ignorable ...)).
Bump version to 3.1.0.114
Rename package-system to package-inferred-system.
Bump version to 3.1.0.115
Trivial whitespace fix.
Fix an incorrect version number in the documentation.
Bump version to 3.1.0.116
Merge branch 'master' into docs

Non-trivial merge necessary because there were updates to the ASDF
manual on master corresponding to the (renamed) package-inferred-system
facility.
Fix define-package on MKCL in some upgrade case (thanks to JCB).
Be more quiet while checking results.
Bump version to 3.1.0.117
Merge branch 'master' into docs