list all packages on various Linux distributions

 This is a simple module that uses Linux::Distribution to guess the linux
 distribution and then uses the correct commands to list all the packages on
 the system and then output them in one of three formats: native, csv, and
 xml.
 .
 Distributions currently working: debian, ubuntu, fedora, redhat, suse,
 gentoo, slackware, redflag.
 .
 The module inherits from Linux::Distribution, so can also use its calls.