Remove port_first_files support
Clean up rebar_utils
Ignore sub_dirs in skip_dirs
Add missing newline for logging code path update
Warn if we ignore a skip_dir's sub_dirs
Fix code clarity in dir type check
Check for .app.src first
Fix whitespace errors
Delete existing erl files in ?EUNIT_DIR

Before copying the .erl files to the .eunit directory ensure that they
are deleted if they already exist. This prevents EACCES errors to happen
when trying to re-copy .erl files that are read-only.
Add Francis Joanis to THANKS file
Fix whitespace errors
Import new upstream getopt.erl
Support different log levels
Use ?ERROR where appropriate
Fix whitespace errors
Document verbosity level
Simplify excl_sys_filters
Add nodeid= to bash completion
Fix order in erts exclusion filter
Import fixed upstream getopt.erl