fix: use org.eclipse.jdt.launching.JRE_CONTAINER as classpath element which is always present

SVN: 20390

image_readers/.classpath

 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
 	<classpathentry kind="src" path="source/java"/>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.launching.macosx.MacOSXType/JVM 1.5.0 (MacOS X Default)"/>
 	<classpathentry kind="lib" path="/libraries/cisd-base/cisd-base.jar" sourcepath="/libraries/cisd-base/cisd-base-src.zip"/>
 	<classpathentry kind="lib" path="/libraries/commons-lang/commons-lang.jar" sourcepath="/libraries/commons-lang/src.zip"/>
 	<classpathentry kind="lib" path="/libraries/commons-io/commons-io.jar" sourcepath="/libraries/commons-io/src.zip"/>
@@ -12,5 +11,6 @@
 	<classpathentry kind="lib" path="/libraries/slf4j/slf4j.jar" sourcepath="/libraries/slf4j/src.jar"/>
 	<classpathentry kind="lib" path="/libraries/slf4j/log4j12/slf4j-log4j12.jar" sourcepath="/libraries/slf4j/log4j12/src.jar"/>
 	<classpathentry kind="lib" path="/libraries/log4j/log4j.jar" sourcepath="/libraries/log4j/src.zip"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="output" path="targets/classes"/>
 </classpath>