atk: update to version 2.28.0

devel/atk/Portfile

@@ -5,7 +5,7 @@ PortGroup           gobject_introspection 1.0
 
 name                atk
 epoch               2
-version             2.26.1
+version             2.28.0
 set branch          [join [lrange [split ${version} .] 0 1] .]
 categories          devel
 license             LGPL
@@ -19,8 +19,9 @@ long_description    ATK is the GNOME Accessibility ToolKit
 homepage            http://projects.gnome.org/accessibility/
 master_sites        gnome:sources/${name}/${branch}/
 
-checksums           rmd160  55faa64463bd91d7cf8395334c2fd5958cac5585 \
-                    sha256  ef00ff6b83851dddc8db38b4d9faeffb99572ba150b0664ee02e46f015ea97cb
+checksums           rmd160  5d220ca97ed320dad57acf23a6ebeb2d62215d61 \
+                    sha256  2016b61b8ed54da46e8dcbd2c4b0f6cd9c668f229eb966821d5680926a91ba3f \
+                    size    712256
 
 use_xz              yes