Log Message:
Update chat/ejabberd to 17.07.

Version 17.07
=============

Core
- Close accepted socket if sockname/peername has failed.

Version 17.06
=============

New features
- The new cache system is also a new component that allows fine tuning
  of ejabberd performance for either small systems or large scale
  servers.
- Certificate Manager is a feature that has been requested by many
  organisations, allowing administrators to manage their certificate
  more easily
- Riak support for several modules

API
- Deprecate misc:encode_base64/1 and misc:decode_base64/1
- Rename is_user_exists function to user_exists
- Allow api access on both ipv4 and 6 loopback addresses
- Fix invalid argument in get_messages_susbset

Admin
- Refactor ejabberdctl
- Improve ejabberdctl parameters parsing
- Quote all paths to allow spaces in directory names
- update-deps-releases.pl: Show operations to perform before asking to
  apply them
- Fix Salt import from prosody SCRAMmed password

Configuration
- Validate module options on start_module/2
- Validate new options before module reloading
- Validate second-level options
- Introduce iqdisc global option
- stream_management listen option deprecated, use mod_stream_mgmt
- Check presence of some files during option validation
- Speedup configuration options lookup
- Validate all certfiles on startup
- Only validate certfiles if public_key:short_name_hash/1 is available
- Introduce Certficate Manager

Commands
- Add clear_cache admin command
- Parse correctly presence_broadcast option in change_room_option
  command
- Describe command arguments and results in mod_muc_admin
- Improve export2sql explanation; remove obsolete and duplicated
  command
- Fix and document push_roster_all command
- Fix mod_muc_admin command set_room_affiliation
- Fix invalid {args,result}_examples in mod_muc_admin
- Fix srg_user_add/del for non-Mnesia database backends
- Make ext_mod api return rescode

Compilation
- Erlang 17.5 or higher is required
- Add --enable-system-deps configure option
- Add --enable-stun and --enable-sip configure options

Core
- Speedup Mnesia tables initialization
- Improve Mnesia tables creation and transformation
- Improve ejabberd_c2s:close()
- ejabberd_c2s: Don’t close session on stream resume
- Speedup loading of translation files
- Fix ejabberd_router:is_my_route/1
- Don’t let a receiver crash if a controller is unavailable
- Fix OTP-17.5 support
- websocket: Catch exception that may happen when sending data over
  websocket

Databases
- New sql_connect_timeout option
- New sql_query_timeout option
- Get rid of sql_queries.erl
- Use round-robin algorithm when selecting worker from DB pool
- Add Riak as BOSH RAM backend
- Add Riak as mod_proxy65 RAM backend
- Add Riak as mod_carboncopy RAM backend
- Add Riak as router RAM backend
- Add Riak as session manager RAM backend
- Fix cleaning of Riak route table
- Add pubsub import from prosody/metronome
- Fix username in mam export
- Fix Salt import from prosody SCRAMmed password
- In offline export to SQL, first write all DELETE, later all INSERT

Cache
- Implement cache for mod_announce
- Implement cache for mod_private
- Implement cache for mod_privacy/mod_blocking
- Implement cache for mod_last
- Implement cache for mod_vcard and mod_vcard_xupdate
- Implement cache for roster
- Add cache options to the validator
- Use cache for authentication backends
- Use new cache API in mod_shared_roster_ldap
- Use new cache API in ejabberd_oauth
- Use new cache API in mod_mam
- Use new cache API in mod_caps
- Use cache in front of Redis/SQL RAM backends

Modules
- mod_http_upload: Add support for HTTP File Upload 0.3.0
- mod_mam: Added export function
- mod_metrics: Don’t leak with UDP sockets
- mod_metrics: New options ip and port
- mod_muc: Allow a room admin to un/subscribe another JID
- mod_offline: Don’t store messages via a single process
- mod_offline: Make sure only jabber:x:event tag is present in offline
  event
- mod_register: New option ‘access_remove’ ACL
- mod_stream_mgmt: Preserve stanza count on timeout
- mod_vcard_ldap: Parse ldap_uids like in eldap_utils
- mod_client_state: Reset state on session resume
- mod_metrics: Fix IP address parsing
- mod_pubsub: Avoid useless calls on simples subscriptions
- mod_block_strangers: Add allow_local_users option

Elixir
- Update elixir to v1.4.4