tkdnd: update to 2.9

Releases have moved to GitHub

x11/tkdnd/Portfile

@@ -3,24 +3,21 @@
 PortSystem          1.0
 PortGroup           cmake 1.1
 PortGroup           active_variants 1.1
+PortGroup           github 1.0
 
-name                tkdnd
-version             2.8
+github.setup        petasis tkdnd tkdnd-release-test-v2.9.1
+version             2.9
 platforms           darwin
 categories          x11
 license             BSD
 maintainers         {mcalhoun @MarcusCalhoun-Lopez} openmaintainer
 description         an extension that adds native drag & drop capabilities to the tk toolkit
 long_description    Tk Drag & Drop: tkdnd is an extension that adds native drag & drop capabilities to the tk toolkit.
 homepage            http://www.ellogon.org/petasis/index.php/tcltk-projects/tkdnd
-master_sites        sourceforge
 
-checksums           rmd160  34b98d9f4f6df891af3e767e41515b5a8bed171c \
-                    sha256  5e76266adaf381f0c6797b2a15a77c162c2fe718f887d973d61316ded802ca78 \
-                    size    185025
-
-distname            ${name}${version}-src
-worksrcdir          ${name}${version}
+checksums           rmd160  264942ed1772ee64d0a41515e65ef911a2c35bba \
+                    sha256  9faafb0110bf5f7b966462ea22c36e13cb6ac35816cde72a0785007f60d7fcde \
+                    size    568910
 
 cmake.install_prefix ${prefix}/lib
 
@@ -72,4 +69,6 @@ pre-configure {
     }
 }
 
-livecheck.regex     "/tkdnd(\\d+(?:\\.\\d+)*)-src${extract.suffix}"
+livecheck.version   ${version}
+livecheck.url       https://github.com/petasis/tkdnd/releases
+livecheck.regex     {tkdnd-(\d+\.\d+)}