(SERVER-211) Update JRuby to 1.7.17 and fix String::crypt
(SERVER-211) Update JRuby to 1.7.17 and fix String::crypt

Versions of JRuby prior to 1.7.17 used an old, DES-only implementation
of String::crypt. With 1.7.17, it switched to the native crypt(3)
implementation, bringing it in line with MRI.

kylog/puppet-server,camlow325/puppetserver,jpinsonault/puppet-server,ahpook/puppet-server,camlow325/puppetserver,puppetlabs/puppetserver,nicklewis/puppet-server,jeffmccune/puppet-server,ahpook/puppet-server,waynr/puppet-server,erikPrime/puppet-server,puppetlabs/puppetserver,camlow325/puppet-server,fpringvaldsen/puppet-server,erikPrime/puppetserver,rlinehan/puppet-server,camlow325/puppet-server,er0ck/puppetserver,shrug/puppet-server,cprice404/puppet-server,stahnma/puppet-server,puppetlabs/puppet-server,stahnma/puppet-server,ahpook/puppet-server,er0ck/puppetserver,puppetlabs/puppetserver,er0ck/puppetserver,cprice404/puppetserver,nicklewis/puppet-server,waynr/puppet-server,dankreek/puppet-server,cprice404/puppet-server,dankreek/puppet-server,waynr/puppet-server,shrug/puppet-server,briancain/puppet-server,puppetlabs/puppet-server,shrug/puppet-server,rlinehan/puppetserver,camlow325/puppet-server,stahnma/puppet-server,erikPrime/puppet-server,briancain/puppet-server,puppetlabs/puppetserver,waynr/puppetserver,jpinsonault/puppet-server,camlow325/puppetserver,dankreek/puppet-server,cgvarela/puppet-server,rlinehan/puppetserver,jpinsonault/puppetserver,jeffmccune/puppet-server,rlinehan/puppetserver,erikPrime/puppet-server,rlinehan/puppet-server,fpringvaldsen/puppet-server,kylog/puppet-server,waynr/puppetserver,kylog/puppet-server,er0ck/puppetserver,jpinsonault/puppetserver,camlow325/puppetserver,cprice404/puppetserver,rlinehan/puppetserver,cprice404/puppetserver,jpinsonault/puppetserver,cgvarela/puppet-server,rlinehan/puppet-server,erikPrime/puppetserver,erikPrime/puppetserver,cgvarela/puppet-server,waynr/puppetserver,jpinsonault/puppet-server,shrug/puppet-server,fpringvaldsen/puppet-server,nicklewis/puppet-server,briancain/puppet-server,puppetlabs/puppet-server,jeffmccune/puppet-server,cprice404/puppet-server