adding formula for AWS elastic beanstalk. cleaning up aspell formula, adding default english dictionary if non specified.

adding required AWSDevTools directory

remove windows/linux specific files

removed trailing whitespace and explicit version to cleanup brew audit warning

mostly migrated to new style options (except lang=fr,en), added default of english dictionary if non specified per issue #16031

incorporating feedback from @adamv: default to system python interpreter and install to libxec