HSEARCH-1252 Fixed documentation example for "Returning distance to the center in the results"

setSpatialSearchCenter was renamed to setSpatialParameters
HSEARCH-1252 Fixed documentation example "Sorting by distance"

DistanceSorts also needs the name of the spatial field
HSEARCH-1251 Update to Apache Lucene 3.6.2
HSEARCH-1230 Adding test for IndexReader state used by filters
Preparing for release of Hibernate Search 4.2.0.CR1: readme and changelog updates
[maven-release-plugin] prepare release 4.2.0.CR1
[maven-release-plugin] prepare for next development iteration