rebuild dependents after upgrade

[Bradley Giesbrecht]

Does macports rebuild dependents after an upgrade?

If not what would be a command to rebuild openssl and then everything  
that depends on it?

bash-3.2# port dependents openssl
cclient depends on openssl
python26 depends on openssl
mysql5 depends on openssl
apache2 depends on openssl
libssh2 depends on openssl
cyrus-sasl2 depends on openssl
openldap depends on openssl
curl depends on openssl
php5 depends on openssl
dovecot depends on openssl
qt4-mac depends on openssl


Thank you,
Brad