When multiple resources have the same (highest) priority, the session
manager routes messages sent to their bare JID to each of these
resources. When another resource has a lower priority but receives
carbon copies, make sure it won't receive multiple copies of such
messages.
An earlier version of XEP-0280 specified the <received/> and <sent/>
tags to be siblings of the <forwarded/> element, whereas the current
version mandates them to be parents of <forwarded/>. The mod_carboncopy
module supports both variants. However, the check that makes sure
clients won't receive a copy of the messages they sent didn't work for
the old-style schema. This is now fixed.
Log one instead of three [info] messages when XEP-0280 (Message Carbons)
support is enabled or disabled successfully. On failure, log an
additional [warning].
As the session manager handles messages sent to unavailable resources
just like messages sent to bare JIDs, mod_carboncopy must do that, too.
That is, forward them only to those carbon-copy-enabled resources that
don't have a top priority, in order to avoid duplicates.
Use dynamic Rebar configuration
Make iconv dependency optional
Disable transient_supervisors compile option
Add hipe compilation support
Only compile ibrowse and lhttpc when needed
Make it possible to generate an OTP application release
Add --enable-debug compile option
Add --enable-all compiler option
Add --enable-tools configure option
Add --with-erlang configure option.
Add --enable-erlang-version-check configure option.
Add lager support
Improve the test suite
