only clean project apps once even when doing --all

compiler refactor/eunit & ct fixes

* modify compiler interface to work on either application objects or
  directories containing source files
* compile all sources in `src_dirs` to the application `ebin` dir and
  all sources in `extra_src_dirs` to a directory mirroring it's
  position in the app's `_build` directory. for example, `apps/foo/more`
  would compile to `_build/default/lib/foo/more`
  for `extra_src_dirs` in the root of a project with multiple
  applications (so orphan directories that don't "belong" to an
  application) compile to `_build/default/extras/more`
* copy directories specified in `extra_src_dirs` into the `_build`
  directory so tools like `ct` and `xref` that expect source to be
  in a particular location still work
* clean compiled artifacts from all `extra_src_dirs`
* alter `eunit`, `ct` and `cover` to work with the new directory
  structure
* billions of new tests

This reverts commit 9d82215296.

return more useful error message (failed to download) when pkg http req fails

Bump cf for fixing #879

Allow non-default checkouts dir for relx

fixes #872

Fix for issue #859 - unicode rendering of deps tree based on PR #865

removing the  /utf8 flag and using the the exact utf-8 value in bytes to make it compatible with compilers <17

Fix for issue #859 - unicode rendering of deps tree based on PR #865
modified PR #865 to the /utf8 flag indicates this is supposed to be a UTF8 string.

Support proper paths in non-erl first files

This passes the directory to the option to ensure it works with more
than configs at the root of the project.

don't include certifi priv dir in escript, it is not needed

add ERLANG_ARCH and ERLANG_TARGET to os env for hooks

print a warning if a profile in 'as' has no config entry

Tsloughter no profile

if not in a git repo but have 'git' as vsn, fallback to 0.0.0

Group dialyzer warnings by file and concentrate output

Add support for disabling ssl verification for hex

Uses global rebar config to see if user wishes to disable ssl verfication.
If {ssl_verify, false} is present certificates will not be verified.

eunit test provider

prior to running compile and compile prehooks

This reverts commit dde60d491f.

profiles are for