Socket server support for character encodings other than system default

Description:
The current implementation of the socket server only supports the system default character encoding for communication between clients. It would be useful if we could specify a character encoding other than the system default on a per-instance basis.

Approach: Add another property :encoding into the server launch configuration to specify a character encoding to use for communication between clients.

Patch: 0001-CLJ-2543-Support-encodings-other-than-system-default.patch