Done in two steps: first, make the list of installers have a good order
(determined by package, then OS type, then cpu, etc); make the JS code
that re-sorts the entries move only the desired options to the top but
otherwise use the original order (which is the previous thing).
For example, instead of "Linux - Fedora 7 (x86_64)", use "Linux x86_64
(Fedora 7)". Hopefully, this will make it clearer that it's often fine
to use some linux installer on a different platform than the one it was
made on. (For example, some people wanted an AMD64 build for Ubuntu,
and eventually it turned out that the x86_64 build on Fedora worked
fine.)
This is even more relevant now since the C part is much less platform
dependent in the linux distro sense.
necessary modules are now "all.rkt"s; "shard.rkt"s turn to
"resources.rkt".
Also, "navbar.rkt" changes to "all.rkt", since it was doing the same
thing (in addition to setting the navbar).
Ie, the difference between using it as a language and as a module is now
the same in both. Also, improve `scribble/html' (and
`scribble/html/htmllang') by reproviding most of the corresponding text
modules.
Change `meta/web' accordingly, and improve code by making a new langugae
(`#lang meta/web'). This language is similar to `scribble/html' except
that it uses the plain scribble reader (not the `-inside' one), it
doesn't use the customized module-begin feature (that uses
`output-xml'), and it adds all the relevant bits of `meta/web/common'.
(Also, "meta/web/common.rkt" is gone, since it's used only as a language
now.)
This commit has lots of details and binding games, so it's tricky, and
potentially caused some problems. (Took me a while to track many
breakages, so I won't be surprised if there are more.)
