- improve error message
- handle missing packages
- replace "[llength [array names ...]]" by "[array size ...]"
- simplify logic in apm_simple_package_install and apm::package_version::attributes::get_instance_name
- handle additional install packages in apm_read_package_info_file
- handle multiple packages instances in xml::action::set-parameter
- reflow some long lines
- various code simplifications
- acs-admin/www/apm/packages-install:
  * don't html-quote in error.log
- acs-admin/www/apm/packages-install-2:
  *  handle additional install packages
- apm-packages-install-4
  * scroll auotmatically to the end
  * load install.xml if present
- fix typo