MFH: r415534

textproc/expat2: update 2.1.0 -> 2.1.1

• Update USES for new release format
• Drop CVE-2015-1283 patch now included in this release
• Add patch for CVE-2016-0718

PR: 209360
Submitted by: tijl
Approved by: ports-secteam (with hat)
Security: CVE-2016-0718
Security: https://vuxml.FreeBSD.org/freebsd/57b3aba7-1e25-11e6-8dd3-002590263bf5.html