Bug 63115

In org.apache.jasper.JsjC class

the method "scanFilesInternal" use "context.getResourcePaths(input)" method to retrieve all resources available in "input" folder.
but all the paths returned by this method start with the value contains in "input" variable.
Then, scanFilesInternal iterate other all paths returned and call scanFilesInternal again (recursivity) for each of then. 
But, the value contains in "input" variable is concatenate with the current path (which already start with the value contains in "input"). So, the first part of the path is duplicated.

example:
 
private void scanFilesInternal(String input) {       <= input = /jsp/
Set<String> paths = context.getResourcePaths(input); <= paths [/jsp/home/,/jsp/actu/..]
...
  scanFilesInternal(input.substring(0, input.length() -1) + path);
           =>  scanFilesInternal("/jsp"+"/jsp/home/")<= /jsp/ appears twice!!

}