Flock'ing /var/lock/ejabberdctl by ejabberdctl was removed with
f7d4aae64d ("Use UUID for ctl node name (#1021)"), however the
according recipies in the Makefile where never removed. This commit
does that.
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