[Dovecot] 2.0.8 & enable-header-install

[Tamsy]

Dear List,

up to Dovecot 2.07 I used "--enable-header-install" for the Sieve Plugin 
when configuring Dovecot before compiling. With 2.0.8 I get the 
following message when running the configure script: "configure: 
WARNING: unrecognized options: --enable-header-install"

Is this intentionally? Is there a substitute directive for Sieve when 
compiling Dovecot 2.08?

Rgds

Tamsy