convert to package format3 and use setuptools

Author: fmessmer

package.xml

@@ -1,4 +1,8 @@
-<package>
+<?xml version="1.0"?>
+<?xml-model
+  href="http://download.ros.org/schema/package_format3.xsd"
+  schematypens="http://www.w3.org/2001/XMLSchema"?>
+<package format="3">
   <name>rosjava_build_tools</name>
   <version>0.3.3</version>
   <description>
@@ -12,10 +16,10 @@
   <author>Daniel Stonier</author>
 
   <buildtool_depend>catkin</buildtool_depend>
+  <buildtool_depend condition="$ROS_PYTHON_VERSION == 2">python-setuptools</buildtool_depend>
+  <buildtool_depend condition="$ROS_PYTHON_VERSION == 3">python3-setuptools</buildtool_depend>
 
-  <build_depend>java</build_depend>
-  <build_depend>ant</build_depend>
-  <run_depend>java</run_depend>
-  <run_depend>ant</run_depend>
-  <run_depend>catkin</run_depend>
+  <depend>ant</depend>
+  <depend>java</depend>
+  <exec_depend>catkin</exec_depend>
 </package>

setup.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-from distutils.core import setup
+from setuptools import setup
 from catkin_pkg.python_setup import generate_distutils_setup
 
 d = generate_distutils_setup(