[pkg-lighttpd] Bug#515699: etch->lenny upgrade problem when mod_auth is enabled

[Jonathan Pilborough]

Package: lighttpd
Version: 1.4.19-5

Under lenny, the mod_auth config file is 05-auth.conf, not 10-auth.conf as in 
etch. As a result, if the module is enabled during the dist-upgrade lighttpd 
fails to start after the upgrade since it can't read the the now-invalid 
symbolic link in conf-enabled.

Obviously this is simple to fix(delete the link and run lighty-enable-mod 
again), but it shouldn't happen.