MFH: r446704

Introduce versions of the Mozilla Public License (MPL)

MPL10 - https://opensource.org/licenses/MPL-1.0
MPL11 - https://opensource.org/licenses/MPL-1.1
MPL20 - https://opensource.org/licenses/MPL-2.0

More info about the Mozilla Public License:
https://www.mozilla.org/en-US/MPL/

Reviewed by: amdmi3, mat
Approved by: portmgr (mat)
Differential Revision: https://reviews.freebsd.org/D11696

This should fix MP* licenses on the quarterly branch requiring
acceptance even with BATCH.

Approved by: portmgr (implicit)