Thanks to Kostis for no_return() result type.

Thanks to Cliff Moon for correct fun clause to add.

The previous code in rebar that was trying to ensure that parse
transforms and behaviours were compiled first doesn't work with multiple
compiler workers because of the possiblity of one of the workers
compiling a file that needs a parse transform or a behaviour at the same
time another worker is compiling that same parse transform or behaviour.

The solution this patch implements is to append any parse transforms and
any behaviours (in that order) to erl_first_files to ensure that they
are compiled before any regular files. This patch won't break any
currently working uses of erl_first files because we only append to the
list, so anything in erl_first_files is still compiled before anything
else.

Add a coverage report similar to the one output to index.html except
that it is output to the terminal if the new rebar.conf option
'cover_print_enabled' is set to true.

The previous fix to relax the regex was insufficient.
This is basically the diff proposed by Bryan Fink with
the difference of using 'C' instead of 'en_US'.

Reported-by: Manuel Duran Aguete <manuel@aguete.org>

rebar_utils:sh/2 terminates on error and does not return an error code
as expected.

2010-09-23 Juan Jose Comellas <juanjo@comellas.org>

  * Released v0.3.0
  * Added support for rebar.
  * Cleaned up dialyzer warnings.

--HG--
extra : rebase_source : 9eccc596d8

Rebar currently doesn't give any feedback on an invalid command. This change
makes rebar keep track of how many operations each command triggers, if a
particular command doesn't change the count, there were no modules implementing
it. If at the end of handling all commands, tje count is 0, none of the supplied
commands were valid and ?FAIL is called to trigger a non zero exit status.

Uses code:which or cover:is_compiled to get path the beam for chunks

--HG--
extra : rebase_source : 2f2b819e20