ApproveFalcon.xml: don't require ANT_HOME environment variable, and download Apache Rat JARs to basedir when they're not found

ApproveFalcon.xml

diff --git a/ApproveFalcon.xml b/ApproveFalcon.xml
index 908dd56..d09ffe4 100644
--- a/ApproveFalcon.xml
+++ b/ApproveFalcon.xml
@@ -71,9 +71,6 @@
 	<condition property="do.copy.downloads" >
 		<isset property="download.cache.dir" /> 
 	</condition>
-	
-    <fail message="The ANT_HOME environment variable is not set."
-        unless="env.ANT_HOME"/>
 		
 	<available file="${env.AIR_HOME}"
 		type="dir" 
@@ -99,7 +96,13 @@
     
     <fail message="The FLASHPLAYER_DEBUGGER property is not set in environment or command-line."
         unless="FLASHPLAYER_DEBUGGER"/>
-        
+    
+    <available file="${basedir}/${apache.rat.jar}"
+        type="file"
+        property="apache.rat.found"/>
+    <available file="${basedir}/${apache.rat.tasks.jar}"
+        type="file"
+        property="apache.rat.tasks.found"/>
     <available file="${env.ANT_HOME}/lib/${apache.rat.jar}"
         type="file"
         property="apache.rat.found"/>
@@ -162,16 +165,23 @@
 	
 	<target name="install-rat" depends="install-rat.jar,install-rat.tasks.jar" />
 	<target name="install-rat.jar" unless="apache.rat.found">
-		<get src="${apache.rat.url}/${apache.rat.jar}" dest="${env.ANT_HOME}/lib/${apache.rat.jar}" />
+		<get src="${apache.rat.url}/${apache.rat.jar}" dest="${basedir}/${apache.rat.jar}" />
 	</target>
 	<target name="install-rat.tasks.jar" unless="apache.rat.tasks.found">
-		<get src="${apache.rat.tasks.url}/${apache.rat.tasks.jar}" dest="${env.ANT_HOME}/lib/${apache.rat.tasks.jar}" />
+		<get src="${apache.rat.tasks.url}/${apache.rat.tasks.jar}" dest="${basedir}/${apache.rat.tasks.jar}" />
 	</target>
 	
     <target name="rat-taskdef" description="Rat taskdef">
-        <typedef resource="org/apache/rat/anttasks/antlib.xml"
-        uri="antlib:org.apache.rat.anttasks"
-        classpathref="anttask.classpath"/>
+        <taskdef
+            uri="antlib:org.apache.rat.anttasks"
+            resource="org/apache/rat/anttasks/antlib.xml">
+            <classpath>
+                <pathelement location="${basedir}/${apache.rat.jar}"/>
+                <pathelement location="${basedir}/${apache.rat.tasks.jar}"/>
+                <pathelement location="${env.ANT_HOME}/lib/${apache.rat.jar}"/>
+                <pathelement location="${env.ANT_HOME}/lib/${apache.rat.tasks.jar}"/>
+            </classpath>
+        </taskdef>
     </target>
 
     <target name="main" depends="write-out-jars-list,install-rat,download,check-sigs,uncompress,rat-check,examine-jars,check-notices,build,approve" description="Perform required release approval steps">
@@ -283,7 +293,7 @@
                 dest="${basedir}/${bin.package.url.name}"/>
     </target>
 
-    <target name="rat-check" >
+    <target name="rat-check" depends="rat-taskdef">
 
         <echo message="Checking files at ${basedir}/${src.package.url.name}, report is ${src.rat.report}"/>
 
@@ -357,7 +367,7 @@
         addproperty="rat.bin.binaries.ok"/>
     </target>
 
-    <target name="binary-rat" >
+    <target name="binary-rat" depends="rat-taskdef">
         <echo>${jars-list}</echo>
         <rat:report xmlns:rat="antlib:org.apache.rat.anttasks"
             reportFile="${bin.rat.report}">