Imported libsx from jabberd2 codebase
Imported rate_t to util
Added PACKAGE_ fields to config.h
Ported stanza.c util
Use IBM ICU instead libidn
Do not put util/ on include path

It's more readable to explicitly #include <util/...>
Move modules_path to main binary extern
Ported authreg module manager
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
Ported c2s SASL SX plugin callback