[Dovecot] files missed from install

[Tim Dickson]

version: using dovecot 2.1.8 or 2.0.12

bug: installation - some files missed

details:  dovecot-openssl.cnf and mkcert.sh are not copied from the 
src/doc folder to the installation doc folder on installation (make install)
both are referred to in the documentation and are useful.

is there any chance of updating the build scripts to include these files?
thanks,

Tim