[PATCH] Parsing of MIME/HTTP header attribute value parameters

Hi,

  According to RFC 2045, we should be parsing MIME/HTTP header value  
parameter names in a case insensitive manner. To quote:
---
attribute := token
                   ; Matching of attributes
                   ; is ALWAYS case-insensitive.

      value := token / quoted-string

----

Kannel is generally well-behaved in this regard, but one seems to  
have gotten away. As usual it takes interfacing with a finicky  
application to catch this!

Find attached a very small patch (one line) to fix this problem.