DATASOLR-62 - Add support for sort when using annotated query
DATASOLR-63 - Support sort when using named queries
DATASOLR-65 - Added support for non-default request handlers.

Handler can be added to query via annotation:
@Query(requestHandler = "/instock")

pull request: #9
CLA: 46620130409043035 (Andrey Paramonov)
DATASOLR-66 - Upgrade to solr 4.2.1
[DATASOLR-65] - add docbox section covering request handlers
DATASOLR-42 - Add support for {!join
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/main/java/org/springframework/data/solr/repository/Query.java
	src/test/java/org/springframework/data/solr/core/ITestSolrTemplate.java
	src/test/java/org/springframework/data/solr/core/QueryParserTests.java