FS-10166: Removed old DHT tests and stuff related to libtorrent, and a straggling diff related to old DHT.

FS-10165: Removed dependancy and autoconf check for libsodium from libks. Moved DHT, bencode, and related tests into libblade. Still requires refactoring in blade from ks_* to blade_*.

Merge pull request #1234 in FS/freeswitch from feature/FS-9952-implementing-a-syncronized-scalable to master

* commit '7742dffa': (34 commits)
  FS-9952: Initial implementation of a very basic text chat system which introduced a number of supporting subsystems
  FS-9952: Added support to default ks_log system for including optional prefixes as desired, also added thread and time prefix options
  FS-9952: Big commit, first registered jsonrpc echo call successful, lots of cleanup remaining
  FS-9952: Intermediate commit for a fresh point to start retrofitting the jsonrpc code that is incomplete
  FS-9952: Some code refactoring and added TTL for sessions, currently harcoded at 5 seconds for testing purposes only and should come from config
  FS-9952: Preliminary session negotiations done, added a bunch of logging, fixed up cleanup code, needs more testing and more error handling
  FS-9952: Added the first half of the session negotations for the server side, untested as it requires the second half coming soon for client side
  FS-9952: A bunch of cleanup and shifting connections towards ID based passing instead of pointers, will replicate and adjust for session system next
  FS-9952: Add blade rpc error response creation
  FS-9952: Fix compile errors in test 64bit build
  FS-9952: Committing to show problem with ks_pool_resize
  FS-9952: Add query & tests for blade extention to rpc messages
  FS-9952: Add blade extention to rpc messages
  FS-9952: Some work towards client connectivity support, commit is to remove blade_message_t and get RPC stuff updated, code does not compile currently
  FS-9952: Added initial support for registering transports, and initial untested code for parsing identities
  FS-9952: Updated bladec test, it successfully listens for connections, further testing required
  FS-9952: Added envelope to queue sending messages, prepping for initial server transport testing
  FS-9952: Add rpc h files to ks
  FS-9952: Update for compile issues
  FS-9952: More work on the connection and transport code, couple things left to do but nearly ready for testing upto starting session negotiations
  ...

FS-9952: Initial implementation of a very basic text chat system which introduced a number of supporting subsystems

FS-9952: Added support to default ks_log system for including optional prefixes as desired, also added thread and time prefix options

FS-9952: Intermediate commit for a fresh point to start retrofitting the jsonrpc code that is incomplete

FS-9952: Some code refactoring and added TTL for sessions, currently harcoded at 5 seconds for testing purposes only and should come from config

FS-9952: Preliminary session negotiations done, added a bunch of logging, fixed up cleanup code, needs more testing and more error handling

FS-9952: Added the first half of the session negotations for the server side, untested as it requires the second half coming soon for client side

FS-9952: A bunch of cleanup and shifting connections towards ID based passing instead of pointers, will replicate and adjust for session system next

FS-9952: Some work towards client connectivity support, commit is to remove blade_message_t and get RPC stuff updated, code does not compile currently

FS-9952: Added initial support for registering transports, and initial untested code for parsing identities

FS-9952: More work on the connection and transport code, couple things left to do but nearly ready for testing upto starting session negotiations

FS-9952: Rewrote core code to utilize state machine driven system based on discussions, code compiles but completely untested currently

FS-9952: Fixed some stuff to get the blade service tested upto the point of processing config and listening on the same port across multiple interfaces

FS-9952: More work on the blade service transport layer, now compiles but is untested, and still missing a few pieces to be functional