more *Ref bugs in copyXXXX (maybe appendXXXX tooo) [LUCENE-4714]

```Java
public void copyBytes(BytesRef other) {
- if (bytes.length - offset < other.length) {
+ if (length < other.length) {
```

I'll work up tests for all these classes

---
Migrated from [LUCENE-4714](https://issues.apache.org/jira/browse/LUCENE-4714) by Robert Muir (@rmuir)
Attachments: [LUCENE-4714.patch](https://apache.github.io/lucene-jira-archive/attachments/LUCENE-4714/LUCENE-4714.patch) (versions: 4)

Start by reviewing the BytesRef.copyBytes example and the attached LUCENE-4714.patch; identify the other *Ref copyXXXX and possible appendXXXX methods implicated. Add tests for each confirmed bounds bug and run the relevant Lucene tests to verify the fixes.

Written by the indexing model from the issue text.