chop .class at the end, not somewhere in the middle.

PR:             1124
Submitted by:	mstover1@apache.org


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268888 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/Rmic.java

@@ -456,7 +456,7 @@ public class Rmic extends MatchingTask {
         String[] newFiles = sfs.restrict(files, baseDir, baseDir, mapper);
         for (int i = 0; i < newFiles.length; i++) {
             String classname = newFiles[i].replace(File.separatorChar, '.');
-            classname = classname.substring(0, classname.indexOf(".class"));
+            classname = classname.substring(0, classname.lastIndexOf(".class"));
             compileList.addElement(classname);
         }
     }