Replaced deprecated csv and json update handler classes with the new general update handler
Replaced deprecated collation field analyzer and replaced it with a dedicated ICUCollationField. Language dependencies are moved to the included language-specific-fieldtypes.xml
Changed strategy for including custom and language specific schema parts to SGML entities as Xinclude only supports single xml entities, not lists of them
Merge pull request #165 from ezsystems/47-deprecated-warn-fixes

EZP-23090: Fix Solr 4.7 deprecated warnings