fileUpload listener

# The "fileUploadListener" with MyFaces or JSF-RI 1.2_04

## Description

The "fileUploadListener"("UploadEvent" event) is not invoked when MyFaces or JSF-RI 1.2_04 is used. But file is uploaded successfully.

## Links

- Jira(for MyFaces)

- RichFaces Forum

## How to reproduce

MyFaces or JSF-RI 1.2_04 with default configuration

## Causes

In case MyFaces `org.apache.myfaces.CHECK_EXTENSIONS_FILTER` parameter is set to "true", the parameter checks if the extensions-filter has been properly configured.

The reason why usage of JSF-RI 1.2_04 causes the problem is not yet identified.

## Workarounds

To avoid generation of errors from MyFaces in case of invalid filter configuration you can set up the following parameters in web.xml:

    ...
    <context-param>
        <param-name>org.apache.myfaces.CHECK_EXTENSIONS_FILTER</param-name>
        <param-value>false</param-value>
    </context-param>
    ...

In case of JSF 1.2_04, upgrading to JSF-RI 1.2_07 (last stable version) works.