Log Message:
Update imp to 3.2.4

Ok'ed wiz@/snj@/bouyer@

>From the CHANGELOG:

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v3.2.4
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[cjh] SECURITY: Close an XSS hole exploited via the Content-type header
      of malicious emails.
[jan] Fix conversion of folder names in some non-ascii charsets with buggy
      iconv implementations (Wenzhuo Zhang <wenzhuo@zhmail.com>).
[jan] Filter out <base> tags when viewing HTML messages (Bug #10).
[mms] Encode subject when saving as draft (Tero Matinlassi
      <tero.matinlassi@edu.vantaa.fi>).

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v3.2.3
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[jan] Fix the 'undefined index direct_access' error still occuring in obscure
      cases.
[jan] Add Indonesian language (Slamin <slamin@unej.ac.id>).
[jan] <style> and <link> tags get commented out in HTML messages to not
      allow them breaking the page layout.
[jan] Add Galician translation (Rafael Varela Pet <srrafa@usc.es>, Guillermo
      Mendez <guille@usc.es>).
[jan] Remove HTML tags showing up in some error messages.
[mms] The spell check feature now keeps lines wrapped and correctly handles
      apostrophes in words on all architectures.