jw-build doesn't stop at building software, packaging it afterwards is also a core feature, so this commit gives the package a better name.
The commit replaces strings s/jw-build/jw-pkg/ in text files and file names. Fallout to the functionality is fixed, variable names are left as they are, though. To be adjusted by later commits.
--login is not understood by pgit.sh push. Solve that by allowing all commands a --login option. This addresses our use case, but isn't ideal of course. Will be finally fixed by moving pgit.sh's functionality into Python code.
pgit.sh clone --login <username> fails to insert said username into a remotes url while adding it: Of ssh://<username>@git.janware.com/srv/git, only ssh://@git.janware.com/srv/git makes it into the config. Fix that.
git-pull-% pulls whatever $(GIT_MAIN_BRANCH) happens to be from the remote jw-% into the current branch, with --rebase and --autostash.
git-pull-maintainer does the same with <maintainer>. <maintainer> is figured out from the configuration in projects.conf. If it's the invoking user, origin is used.
In the attempt to move away from communicating options via environment variables from one part of jw-build software to another, replace PGIT_CLONE_FROM_USER with the clearer --refspec option. Which is also more versatile.
Don't unconditionally add proactiveAuth=basic to Git's config during clone, but only if cloning happens after authentication.
This saves unauthenticated users funny password prompts. On the other hand, this makes a server setting persistent which could be changed on the server.
URL =~ /api/ (or so) => 401, followed by Basic Auth URL !=~ /api/ (or so) => Redirect or free access, depending on resource
Currently all resources, including API, are accessible by either basic auth or a Cookie, but basic auth needs to be present in the first request, which throws off some clients (notably Git without proactiveAuth=basic).
Currently, the primary discriminating criterion on how to handle a set of remote repositories is whether or not JANWARE_USER is defined. The canonical way to do that is PROJECTS_DIR_REMOTE_BASE, though, so go from that definition.
PROJECTS_DIR_REMOTE_USER_SUBPATH is a janware.com specialty somewhat. Having subpaths is a Forgejo feature request on Codeberg, though, so it might also be here to stay.
curl exits with 0 success status, even if the server returns HTTP 401. Passing -f fixes that and has curl error out with exit code 22. It doesn't show which error, though.
Pass -c http.proactiveAuth=basic to the initial "git clone jw-build" invocation. This is necessary while jw-build is still behind authentication. The restriction will likely be lifted (for jw-build), but for testing now it's fine, and it doesn't do any harm, either. With the way janware.com currently operates, it will also necessary for push over HTTP, so make it persistent in jw-build's configuration.
Linking the projects-dir Makefile fails if make pkg-rebuild has been run on jw-build, because it leaves another projects-dir-minimal.mk below the dist directory. Fix that.
The usage comments heading projects-dir-minimal.mk and projects-dir.mk state that for cloning all repositories, JANWARE_USER needs to be defined. That restriction is now gone, so reflect that in the comment.
