File list (Check if you may need any files):
3DefaultFileItem.class
DefaultFileItemFactory.class
disk
DiskFileUpload.class
disk\DiskFileItem.class
....\DiskFileItemFactory.class
FileItem.class
FileItemFactory.class
FileItemHeaders.class
FileItemHeadersSupport.class
FileItemIterator.class
FileItemStream$ItemSkippedException.class
FileItemStream.class
FileUpload.class
FileUploadBase$FileItemIteratorImpl$1.class
FileUploadBase$FileItemIteratorImpl$FileItemStreamImpl$1.class
FileUploadBase$FileItemIteratorImpl$FileItemStreamImpl.class
FileUploadBase$FileItemIteratorImpl.class
FileUploadBase$FileSizeLimitExceededException.class
FileUploadBase$FileUploadIOException.class
FileUploadBase$InvalidContentTypeException.class
FileUploadBase$IOFileUploadException.class
FileUploadBase$SizeException.class
FileUploadBase$SizeLimitExceededException.class
FileUploadBase$UnknownSizeException.class
FileUploadBase.class
FileUploadException.class
MultipartStream$IllegalBoundaryException.class
MultipartStream$ItemInputStream.class
MultipartStream$MalformedStreamException.class
MultipartStream$ProgressNotifier.class
MultipartStream.class
ParameterParser.class
portlet
.......\PortletFileUpload.class
.......\PortletRequestContext.class
ProgressListener.class
RequestContext.class
servlet
.......\FileCleanerCleanup.class
.......\ServletFileUpload.class
.......\ServletRequestContext.class
util
....\Closeable.class
....\FileItemHeadersImpl.class
....\LimitedInputStream.class
....\Streams.class