[orca] Bump at-spi2 minimum version to current stable; remove atk check

[Joanmarie Diggs <joanied src gnome org>]

commit af2eac6d4010f347e42df61b85febd0cc6dabffd
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Tue Sep 10 10:10:11 2013 -0400

    Bump at-spi2 minimum version to current stable; remove atk check

 configure.ac |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 755bb7d..1ed3f70 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5,9 +5,8 @@ m4_define([orca_version],
           [orca_major_version.orca_minor_version.orca_micro_version])
 
 m4_define(pygobject_required_version, 3.4.2)
-m4_define(atspi_required_version, 2.6)
-m4_define(atkbridge_required_version, 2.6)
-m4_define(atk_required_version, 2.6)
+m4_define(atspi_required_version, 2.8)
+m4_define(atkbridge_required_version, 2.8)
 
 AC_INIT([orca],
         [orca_version],
@@ -35,7 +34,6 @@ YELP_HELP_INIT
 PKG_CHECK_MODULES([PYGOBJECT], [pygobject-3.0 >= pygobject_required_version])
 PKG_CHECK_MODULES([ATSPI2], [atspi-2 >= atspi_required_version])
 PKG_CHECK_MODULES([ATKBRIDGE], [atk-bridge-2.0 >= atkbridge_required_version])
-PKG_CHECK_MODULES([ATK], [atk >= atk_required_version])
 
 dnl Needed programs
 AC_PROG_INSTALL