[Dovecot] Sieve plugin should recompile when symbolic link changes [patch]

The sieve plugin compares the modification dates of sieve source and compiled script and compiles the script only if necessary. When the managesieve extension is used, it creates a symbolic link for the script. In order to switch between scripts managesieve changes the link only.

Therefore the sieve plugin should include the modification date of an symlink in its decision about compilation. The attached patch adds this functionality.

Regards, Frank

Frank Behrens, Osterwieck, Germany PGP-key 0x5B7C47ED on public servers available.