Change the (commented-out) default JVM location to that used by Ubuntu.

git-svn-id: https://svn.apache.org/repos/asf/lucene/hadoop/trunk@492232 13f79535-47bb-0310-9956-ffa450edef68

conf/hadoop-env.sh.template

@@ -6,7 +6,7 @@
 # remote nodes.
 
 # The java implementation to use.  Required.
-# export JAVA_HOME=/usr/bin/java
+# export JAVA_HOME=/usr/lib/j2sdk1.5-sun
 
 # The maximum amount of heap to use, in MB. Default is 1000.
 # export HADOOP_HEAPSIZE=2000