MFH: r452027
Fix security issues: CVE-2017-12176 through CVE-2017-12187 in xorg-server.
Bump all the slaves due to not being sure where the shared code is used.
Security: 7274e0cc-575f-41bc-8619-14a41b3c2ad0
Approved by: ports-secteam (eadler)
PR: 223286