Splitting the almost 70 MiB userguide package into one package per
language at ~4.5 MiB saves time and space when installing/updating.
At the online tool that manages the user guide pages, we have to
make changes to fall back to the online page if you try to switch
to a language you haven't installed locally. See #9322.
This is based on Jalopeura's patch to #10191, however, there are some
changes.
From the patch:
* Make userlandfs use separate "interface definition" files for each
filesystem, so the netfs package can provide a configuration file
* Add a short document on how to use NetFS
* Various fixes to netfs to make it build again (volatile atomics)
* The netfs_mount script for easier use of NetFS
Additional fixes:
* Move netfs_mount and the interface description file to data/ in the
source tree
* Use strlcat instead of strcat to avoid a buffer overflow
* Some parts were already applied in previous commits
* Now that system updates seem to work properly, put the haiku
repository config and cache file onto the image automatically.
* Adjust URL of haiku repository (it is currently redirected
to some other URL at download.haiku-os.org, but that will be
changed later).
* HaikuRepository rule: Create the repository config.
* HaikuImage: Add the repository config for the Haiku image. The
repository cache is not added, though (it would only be available, if
the repository had been built before).
Implements #10287. The Haiku repository is now available in Haiku by
default.
* PreprocessPackageInfo rule: Pull out new rule
PreprocessPackageOrRepositoryInfo which does the sed substituation and
optionally the filtering through the C preprocessor.
* HaikuRepository rule: Generate the repository info file (from the
given template). No longer do that in the build_haiku_repository
script.
* Add rule HaikuRepository to build a repository from a repository info
file and a list of package files. It calls a build_haiku_repository
script which does all the work.
* Add target <repository>haiku for building the Haiku package
repository.
It should be built via "jam -q @alpha-raw build <repository>haiku";
the build profile is only needed to activate all build features.
