- new URLs, updated to 2.2.3 (fixes CVE-2015-8874 CVE-2016-3074 CVE-2016-5766 CVE...

- new URLs, updated to 2.2.3 (fixes CVE-2015-8874 CVE-2016-3074 CVE-2016-5766 CVE-2016-5767 CVE-2016-6128 CVE-2016-6132 CVE-2016-6207 CVE-2016-6214)
- removed obsolete missing,version patches
- removed outdated libvpx2 patch (WebP is now supported via libwebp instead of libvpx)
- old liq patch obsolete; added new one which workarounds allocation alignment issues with SSE-enabled libimagequant
- set XFAIL for tests failing due to known reason
- disable liq by default (breaks transparency handling in TrueColor->palette conversion)