Resolution: Won't Fix
With the advent of Moodle 2.0 (and hopefully many more versions to come) I would suggest creating a separate namespace on docs.moodle.org for each major Moodle version as suggested at http://moodle.org/mod/forum/discuss.php?d=149845 ("Moodle 2.0 , Page naming and sort a progress report"):
A recent issue was mentioned at Development talk:Local customisation where the whole 1.9 documentation was wiped in favor of the new 2.0 one and had to be resurrected from the history.
What about creating a new namespace for Moodle 2.0 so Development:Local customisation would become Development 2.0:Local customisation. That would leave the page names unaltered.