Description:
------------
The built in webserver bails out with an error on retrieval of a non-standard HTTP request method (e.g. PATCH).

Test script:
---------------
Run the PHP built in web server on PORT 8042 and use the following script to reproduce the error:

$httpFilePointer = fopen(                                                       
    'http://localhost:8042',                                                    
    'r',                                                                        
    false,                                                                      
    stream_context_create(                                                      
        array(                                                                  
            'http' => array(                                                    
                'method'        => 'PATCH',                                     
            ),                                                                  
        )                                                                       
    )                                                                           
);

Expected result:
----------------
A valid HTTP response, depending on the script run by the server.

Actual result:
--------------
The server logs to shell:

[Mon Apr  9 15:45:35 2012] ::1:37726 Invalid request (Malformed HTTP request)

The client complains about a malformed response:

Warning: fopen(http://localhost:8042): failed to open stream: HTTP request failed!  in …