Log Message:
Add security patches & bump rev.
via FreeBSD bz #216658

https://nvd.nist.gov/vuln/detail/CVE-2017-5225
http://bugzilla.maptools.org/show_bug.cgi?id=2656
http://bugzilla.maptools.org/show_bug.cgi?id=2657
https://github.com/vadz/libtiff/commit/5c080298d59efa53264d7248bbe3a04660db6ef7

https://nvd.nist.gov/vuln/detail/CVE-2017-7592
http://bugzilla.maptools.org/show_bug.cgi?id=2658
https://github.com/vadz/libtiff/commit/48780b4fcc42

https://nvd.nist.gov/vuln/detail/CVE-2017-7593
http://bugzilla.maptools.org/show_bug.cgi?id=2651
https://github.com/vadz/libtiff/commit/d60332057b95

https://nvd.nist.gov/vuln/detail/CVE-2017-7594
http://bugzilla.maptools.org/show_bug.cgi?id=2659
https://github.com/vadz/libtiff/commit/8283e4d1b7e5
https://github.com/vadz/libtiff/commit/2ea32f7372b6

https://nvd.nist.gov/vuln/detail/CVE-2017-7595
https://github.com/vadz/libtiff/commit/47f2fb61a3a64667bce1a8398a8fcb1b348ff122

https://nvd.nist.gov/vuln/detail/CVE-2017-7598
https://github.com/vadz/libtiff/commit/3cfd62d77c2a7e147a05bd678524c345fa9c2bb8

https://nvd.nist.gov/vuln/detail/CVE-2017-7601
https://github.com/vadz/libtiff/commit/0a76a8c765c7b8327c59646284fa78c3c27e5490

https://nvd.nist.gov/vuln/detail/CVE-2017-7602
https://github.com/vadz/libtiff/commit/66e7bd59520996740e4df5495a830b42fae48bc4