Switch CLASSPATH back to Windows format in Cygwin.

Submitted by:	Jeppe N. Madsen <jeppenm@worldonline.dk>


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@271452 13f79535-47bb-0310-9956-ffa450edef68

src/script/ant

@@ -139,6 +139,7 @@ fi
 if $cygwin; then
   ANT_HOME=`cygpath --path --windows "$ANT_HOME"`
   JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
   LOCALCLASSPATH=`cygpath --path --windows "$LOCALCLASSPATH"`
 fi