setclasspath scripts

[Fenlason, Josh]

In Tomcat 5.5.9 setclasspath.sh, tools.jar is only conditionally added
to the classpath.  
    if [ "$1" = "debug" -o "$1" = "javac" ] ; then
      CLASSPATH="$JAVA_HOME"/lib/tools.jar
    fi
setclasspath.bat unconditionally add tools.jar to the classpath.
    set CLASSPATH=%JAVA_HOME%\lib\tools.jar
 
In Tomcat 5.0.30 setclasspath.sh and setclasspath.bat tools.jar is
unconditionally added to the classpath.
 
Is there a reason why this changed, and only on Unix, between releases?
Thanks.
,
Josh.