Version updates

This change updates the gem versions.
Update to Rubocop 0.15.0

This change updates to Rubocop 0.15.0 and fixes all breakages now
caught.  In addition it adds IntelliJ/RubyMine artifacts to source
control.

[#60059670]
Merge 60059670-rubocop-update to master

[Completes #60059670]
Add MariaDB JDBC driver JAR

MariaDB is available on Maven Central but not with suitable
coordinates.

A particular mirror was picked for downloads. This can be switched
later if necessary.

[#52325391]
Merge 52325391-mariadb to master

[#52325391]
Delete MySQL dependency

MySQL is supporting using the MariaDB driver.

[#52325391]
Merge 52325391-delete-mysql to master

[#52325391]
Dependency updates

This change updates the ruby dependencies for the repository.  Just
good hygiene.
Different MariaDB download URI

This change causes a different MariaDB download URI to be used.
Upgrade Ruby

This change upgrades the required version of Ruby to 1.9.3-p484 due to
a security vulnerability in 1.9.3-p448.

[#61839004]
Merge 61839004-ruby-upgrade to master

[#61839004]
Replicate download cache

This change introduces a replicate script that enables a user to
replicate the download cache.  This implementation is incomplete and
undocumented.  These problems should be fixed before this is merged.
Replace hostname in index.yml files

This updates the bin/replicate script.

[#59344580]
Merge 59344580-replicate-script to master

[Completes #59344580]
Fix rubocop errors

[#59344580]
Merge 59344580-rubocop to master

[Completes #59344580]
Document replicate script

[#59344580]