Add a security patch taken from Apache OpenOffice 4.1.4.

Add a LICENSE entry for MPL10. Code containing both MPL10 and MPL11
licenses is bundled.

Add CONFLICTS_INSTALL.

Move --with-ant-home and -with-jdk-home to Makefile from Makefile.knobs.

MFH: 2017Q4
Security: 27229c67-b8ff-11e7-9f79-ac9e174be3af