Converted 'brjs-core' code and tests to use linked hash maps for order
senstive collections, and added `@Ignore` annotations on redundant tests
outside of 'brjs-core', that are broken because they don't use linked
hash maps when they should (as exposed by running the tests with Java
8).
Merge pull request #474 from BladeRunnerJS/use-linked-hashmaps-when-order-matters

Converted 'brjs-core' code and tests to use linked hash maps for order