Ported c2s component as base module
Added signal handling to xmppd main

and some initialisation and -v ersion
offsetof macro is defined in stddef.h
Ported base routing logic to xmppd
Replaced direct log4c_category_LEVEL calls with LOG_LEVEL macros
Implemented base module notification call

- Moved configure handling to notification system.
Link libsx to main runtime binary
Use miniz native functions instead of zlib streams
Fixed SX/libuv buffers passing
Ported c2s SX plugins
Full initialisation of c2s module structure

with SASL plugin callback skeleton