* dibs: I will implement custom-set

* Created an empty project

* Added custom-set exercise to the Java track

* Added palindrome-products exercise to the Java track

* Added @Ignore annotations to tests

* Added binary search tree exercise to the Java track

* Removed pythagorial triplet from config.json

* Removed binary search from config.json

- This code is the solution for the un-implemented Sum of Multiple
problem.
- Includes Test File which checks each test case indicated here:
https://github.com/exercism/x-common/blob/master/exercises/sum-of-multip
les/canonical-data.json

- in journey test, remove @Ignores so that test runs exercise all tests.
- increase the verbosity of test logging to aide in seeing progress as
  tests are un@Ignored and solved.
- saving scripts used to make changes to all exercises.  These are the
  start of a library of scripts making such changes easier.
- make Gradle output more CI-friendly.

First step in transitioning from "problems" to "exercises".

Part of exercism/xjava#125.

Tests and example implementation based on the ruby exercise.

Completes a task for https://github.com/exercism/xjava/issues/3.

The tests assume that the Deque class is implemented with generics.

The example implementation keeps track of a circular head Element.

Completes one task in https://github.com/exercism/xjava/issues/3.

Based on code review feedback.

This implementation does not generate a test suite based on the json
meta the hello-world exercise.
See https://github.com/exercism/todo/issues/13

Fixes https://github.com/exercism/todo/issues/35