Fixed misleading comment
Skip testing host Python if Python isn't installed
Skip "check-system-store" unit-test when running as root

Test fails because it succeeds in writing to the system directory when
it expects to fail.
Prevent problems if a distribution package name contains '='

(haven't seen any like this; just being paranoid)
Release 2.6.2
Start development series 2.6.2-post
Merge 2.6.2