switch to container from jrelib

build/.classpath

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-    <classpathentry kind="src" path="src"/>
-    <classpathentry kind="src" path="testsrc"/>
-    <classpathentry kind="var" path="JRE_LIB" rootpath="JRE_SRCROOT" sourcepath="JRE_SRC"/>
-    <classpathentry kind="lib" path="/lib/ant/lib/ant.jar"/>
-    <classpathentry kind="lib" path="/lib/junit/junit.jar"/>
-    <classpathentry kind="output" path="bin"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="testsrc"/>
+	<classpathentry kind="lib" path="/lib/ant/lib/ant.jar"/>
+	<classpathentry kind="lib" path="/lib/junit/junit.jar"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="output" path="bin"/>
 </classpath>