Removed @internal from phpdoc as this in some editors shows the API methods as internal. The annotation was only intended for internal comments, but as this is not very important they are 'normal' comments now.

Exact null comparisons

Several small code fixes

Several small fixes

Merging PR #322 into develop

Conflicts:
	library/Solarium/QueryType/Select/Query/Component/FacetSet.php

Fix curl headers for solr > 5

Spellcheck solr5

Facet interval support

- phpcs fixes for the symfony2 codign standard

ZF2 HTTP Client Adapter

Combining Stats Component With Pivots

This reverts commit 8a3cdbf6.

Conflicts:
	tests/Solarium/Tests/Core/Client/Adapter/Zend2HttpTest.php

- can't test it w/o composing in ZF2