TestGeoUtils.testGeoRelations failure [LUCENE-7100]

Reproduces on current master:

```
[junit4] Suite: org.apache.lucene.spatial.util.TestGeoUtils
[junit4] 1> doc=692 matched but should not with distance error 0.0077156912991745465 on iteration 36
[junit4] 1> lon=27.1404150808589 lat=89.35930714019196 distanceMeters=199031.30581689082 vs radiusMeters=197495.64170233608
[junit4] 2> NOTE: reproduce with: ant test -Dtestcase=TestGeoUtils -Dtests.method=testGeoRelations -Dtests.seed=89BF47F028C05B0 -Dtests.slow=true -Dtests.locale=de-DE -Dtests.timezone=Europe/Vatican -Dtests.asserts=true -Dtests.file.encoding=ISO-8859-1
[junit4] FAILURE 0.24s | TestGeoUtils.testGeoRelations <<<
[junit4] > Throwable #1: java.lang.AssertionError: 1 incorrect hits (see above)
[junit4] > at __randomizedtesting.SeedInfo.seed([89BF47F028C05B0:CAB8E0CA767B730E]:0)
[junit4] > at org.apache.lucene.spatial.util.TestGeoUtils.testGeoRelations(TestGeoUtils.java:543)
[junit4] > at java.lang.Thread.run(Thread.java:745)
[junit4] 2> NOTE: test params are: codec=Asserting(Lucene60): {}, docValues:{}, maxPointsInLeafNode=1249, maxMBSortInHeap=6.743377596622864, sim=RandomSimilarity(queryNorm=false,coord=yes): {}, locale=de-DE, timezone=Europe/Vatican
[junit4] 2> NOTE: Linux 3.13.0-71-generic amd64/Oracle Corporation 1.8.0_60 (64-bit)/cpus=8,threads=1,free=430940200,total=504889344
[junit4] 2> NOTE: All tests run in this JVM: [TestGeoUtils]
```

---
Migrated from [LUCENE-7100](https://issues.apache.org/jira/browse/LUCENE-7100) by Michael McCandless (@mikemccand)

Reproduce the failure with the supplied ant command and seed, then inspect org.apache.lucene.spatial.util.TestGeoUtils.testGeoRelations at TestGeoUtils.java:543. Trace the reported distance and radius values around the incorrect hit; done means the reproduced test passes without incorrect matches.

Written by the indexing model from the issue text.