[PATCH] Copy external ACL username and password attributes in HttpRequest::inheritProperties for logging

When a request is successfully adapted, the external ACL username and
password are now inherited with this patch. This means the
LFT_USER_NAME log token can display the username from an external ACL
if available, for adapted requests.

The HttpRequest will inherit the password for good measure as well -
while none too useful, it seems strange to inherit the username but
not the password.

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Nathan Hoad
Software Developer
www.getoffmalawn.com