pfSense

Remove unused function walk_depends()

Remove unused function squash_from_bytes()

Remove unused functions get_pkg_sizes() and get_package_install_size()

Rename get_pkg_id() to get_package_id() and get_pkg_internal_name() to get_package_internal_name(). Try to use more standard parameter names and simplify logic while here

Rename remove_freebsd_package() to pkg_delete() and introduce pkg_remove_prefix() pkg_call() and is_pkg_installed()

Cleanup old and unecessary directory creation

Remove unused function add_text_to_file()

Remove use of obsolete packages tag 'modify_system'

Define pkg_prefix global var

Remove make_dirs(), it was only being used by packages but now all calls were replaced by mkdir()