AER 2566 Add new aerospike interface to set context of execution. First user is LDT which sets
the context to LDT which is used inside server to do special case handling
AER-2947 - Lua list feature support - added insert(), delete(), concat() and trim().
AER-2946 AER-2947 - added Lua support to specify capacity for new lists and maps.
Merge pull request #84 from citrusraj/master

AER 2566 Add new aerospike interface to set context of execution.
Changed name of list method from 'delete' to 'remove', for consistency, and to fix node.js (C++) build.
AER-2254 - add structural support for getting a record's key and set name.
AER-2254 - free the key value after pushing it to Lua.