#428 crao theme breaks installation

[Peter Lundqvist]

It seems (tried a few times with fresh database) that
the virgin wiki won't load using the crao theme. It
stops after

Loading Virgin Wiki
%BODY%

Switching to the default theme, loading the virgin wiki
and then switching back solves the problem if you want
to use the crao theme.

[Joel Uckelman]

Logged In: YES
user_id=245140

I've investigated this problem a bit and found the following:

When loading a virgin wiki (using every theme I've tried),
it stops while loading ReleaseNotes. Refreshing the page
causes the remainder of the pages to be loaded.

I'm not sure yet whether something about the ReleaseNotes
page is causing the problem, or if some memory or process
limit is being hit. If I delete ReleaseNotes from pgsrc,
loading continues up to PhpWikiPoll, and stops there.
Deleting PhpWikiPoll lets the initial load progress a bit
farther. I repeated this through several iterations, but
didn't reach the end of the load process without reloading
the page first.

[Joel Uckelman]

Logged In: YES
user_id=245140

Ok, what I'm seeing is clearly due to hitting a memory
limit, not to any peculiar properties of the pages being loaded:

[client 128.104.60.232] PHP Fatal error: Allowed memory
size of 8388608 bytes exhausted (tried to allocate 9749
bytes) in /home/uckelman/projects/phpwiki/lib/ziplib.php on
line 829

Why does loading a fresh wiki take such an enormous amount
of memory? Are all the pages kept in memory simultaneously
prior to being written to the DB? Hmm.