[imp] Windows XP caches login credentials.

[Christopher Crowley]

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The issue with username and password getting cached on XP seems to be
corrected by adding the autocomplete=off tag to the input fields.  I
added it to the form field, too. 


# diff login.inc
/usr/local/apache_sslr_test/htdocs/horde/imp/templates/login/login.inc


52c52
< <form action="<?= Horde::applicationUrl('redirect.php') ?>"
method="post" name="implogin">
- ---
> <form action="<?= Horde::applicationUrl('redirect.php') ?>"
> method="post" name="implogin" autocomplete=off> 
70c70
<     <td align="left"><input type="text" tabindex="1"
name="imapuser" value="<?= Horde::getFormData('imapuser',
getenv('REMOTE_USER')) ?>" /></td>
- ---
>     <td align="left"><input type="text" tabindex="1"
> autocomplete=off name="imapuser" value="<?=
> Horde::getFormData('imapuser', getenv('REMOTE_USER')) ?>" /></td> 
77c77
<     <td align="left"><input type="password" tabindex="2"
name="pass" /></td>
- ---
>     <td align="left"><input type="password" tabindex="2"
> autocomplete=off name="pass" /></td> 

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