* The all-versions page has a docs column with html/pdf links, and also
two links in the nightly builds footer.
* Specific version download pages have a link to the docs for that
version. (Only html, to save space.)
* The main page's title appears in search results, so use "The Racket
Language" instead of "Racket". Additional minor tweaks to a few more
titles to make them presentable as search results.
* Add a `#:description' keyword to make it easy to add it to pages. Add
such texts to the main page, downloads, community, learning, people,
and mailing list pages.
* Add a <meta name="robots" content="NOODP" /> to the front page, to
avoid getting the ODP (dmoz) blurb, hopefully the new and improved
description(s) will be used instead. (If not, this should be
reverted.)
(Otherwise having both installed can be confusing since the uninstaller
has the same name; also, it's good to make a reminder for people who
want the other one.)
Also, just use the platform string in the registry key uniformly.
Also add a comment about detecting Win64 if it's desirable in the
future.
This is triggered by an environment variable that points at a file that
is used to cache polling results. If the variable is not specified just
use all mirror links as usual. This way, for random builds when people
try things out there is no problem, while the nightly builds (and my
manual builds when there are changes) do the right thing.
The file holds information about the polls, and verifies that the
download exists -- if not, the link is not shown. If it is, then it
tries to get the size of the remote file (via HEAD or via FTP), and if
it doesn't match our download information, then drop it too. If no size
informaion is available, include it, but re-poll after a few days. Even
if the size matches, a re-poll will be done after a month, so stale
mirrors will not stick.
This makes it correspond to the license page we have on downloads that
talks about the "lesser" GPL rather than the "library" one.
Also, change the file name to have a more friendly .txt suffix, and add
some more responsible properties for things in doc/release-notes.
Also get rid of the defunct "chronology" link at the bottom of the
community page. It was a very old (pre-svn/git) leftover from a time
where that was relevant for people who want to participate.
