start of JSON Patch implementation. cJSON gained a cJSON_InsertItemToArray which pushes elements up by one.
This is needed for JSON Patch. Everything but Test is implemented for ApplyPatches.


git-svn-id: svn://svn.code.sf.net/p/cjson/code@65 e3330c51-1366-4df0-8b21-3ccf24e3d50e