Log Message:
gmime3: update to 3.2.5.

### GMime 3.2.5

*  Modified GMimeParser to prevent stack overflows when parsing deeply nested \ 
messages.

     GMimeParser now has a limit on how deep multipart and/or message/rfc822 \ 
MIME part
     nesting is allowed to go before the parser will take action to prevent a stack
     overflow. If the max level is reached at a message/rfc822 part, then that part
     will be consumed by the parser as a generic GMimePart rather than a
     GMimeMessagePart. Likewise, if the max level is reached at any type of \ 
multipart,
     then the content of said multipart will be packed into the GMimeMultipart's
     preface and not parsed any further.

* g_mime_multipart_foreach has been rewritten to avoid recursion, thereby \ 
avoiding potential
  stack overflows.

* The gmime-port-2-6-to-3-0.sh script has been fixed to use proper sed syntax.