and renamed all logging functions.

- adds various malloc error messages
- does some libcsoap/*.c #include fixups
- removes a memleak in libcsoap/soap-server.c soap_server_entry
- removes the double free of SoapCtx->action (again!!!)
- rewrites more or less cleanly hsocket_close
- adds volatile keywords for thread shared data items
- _httpd_parse_arguments cleanup
- rwerites the _httpd_connection initialization
- adds a call to pthread_attr_destroy in httpd_session_main
- fixes a wrong loop initialization in _httpd_wait_for_emtpy_conn
- fixes a memleak in httpd_session_main (req)
- more sophisticated httpd_server example
- HTTP authentication SEGfault without password fixed

* query the port the server is listening on
{soap_server,httpd}_get_port
* the possibility to add a default service via httpd_register_default
* remove some compiler warnings (on FreeBSD pthread_t is a pointer to
  a struct pthread, on Linux it is a (unsigned?) long int)

  tschuess,

   Heiko