mod_bosh: rework previous commit.
mod_bidi: fix redundant statements and cleanup indents.
modulemanager, mod_{host_guard/s2s}: refactor code,
- Make mod_host_guard a shared module and also component inheritable
- Have mod_s2s fire a global s2s-filter event to faster block inc. streams
mod_host_guard: fix code style.
mod_host_guard: make logging statement clearer.
mod_{host_guard/s2s}: pass the session object over...