* Clarified bogosity of toplevel .gitignore (and other such files)
* Removed "doc/" in the toplevel file -- looks like this was some broken
leftover, and it's dangerous for at least "scribble/doc" (which
contains code).
* Collapse more common patterns into worksp instead of in each file.
* Use a trailing "/" for directories.
* racket/lib/collects/pkg/.gitignore looks like a leftover that is no
longer needed.
A package's "info.rkt" file should define `collection' as a
string to name a single-collection package's collection, or as
the symbol 'multi to declare the package as multi-collection.
If `collection' is 'same-as-pkg, then the package name is used
as the collection name.
The default for `collection' is 'multi for now, but the intent
is to change the default to 'same-as-pkg after a conversion
period. Also, support for a `single-collection' definition remains
in place, but it wil be removed.
Allow the location of the installation-specific "links.rktd" file to
be specified in "config.rktd", and also allow extra link files to
be provided.
Allow the same for package directories.
The main file/directory in each case corresponds to the file/directory
that can be modified by an installation-scope install. Extra files
or directories in a search path supports constant links and libraries
that are shared across installations --- like "/usr/lib" versus "/lib".
The 1-second granularity of filesystem timestamps is not
good enough to deetct changes to the file --- especially
when `raco pkg' installs links and runs `raco setup' (in
the same Rcket process), in which case a newly installed link
might not be detected.
The longer-term repair is probably to add file-changed
events to Racket (based on `inotify' and similar interfaces
provided by OSes).
A collection declares release notes with a `release-notes' field in
"info.rkt".
The "doc" directory is now populated exclusively by generated content,
instead of having a static "release-notes" directory (and a "keep-dirs.rktd"
file to record the static directories).
Keep track of the out<n>.sxref timestamps, so that `raco setup'
can detect when the database is out of sync (instead of assuming that
it's always in sync with out<n>.sxref files).
The "racket" directory contains a pared-back version of the
repository, roughly.
The "pkgs" directory everything else in the repository, but
organized into packages.
