[Libguestfs] [PATCH nbdkit 0/2] Temporarily remove .list_exports for nbdkit 1.22

[Richard W.M. Jones]

If you're following nbdkit development upstream you'll have seen that
we are still making changes to the .list_exports and related APIs.
The current .list_exports API upstream is not how it will look
finally.  The latest set of proposals was here:

https://www.redhat.com/archives/libguestfs/2020-August/thread.html#00330

At the same time I'd like to do an nbdkit 1.22 (stable) release.
There are a few reasons for this, some good and some not so great:

 - We have sufficient new features and the schedule is right to do a
   release, but I don't want to push large changes in at the last
   minute.

 - The VDDK plugin has several vital fixes which will be appreciated
   by anyone using nbdkit to access VMware.

 - The Windows patches could be added _after_ we do the stable release
   so they have plenty of time to sit in development.  At the moment I
   have to keep rebasing them.

 - (The not so good one) RHEL 8 demands that we either rebase nbdkit
   now, as in _today_, or else we will wait for many months before our
   customers can use the new features.

Therefore I propose the two following patches.  The first one removes
the mention of list_exports and nbdkit*export* APIs from the 1.22
release notes.

The second one is for stable-1.22 only (before 1.22.0 goes out).  It
removes the .list_exports feature from plugins.  It also removes the
nbdkit*export* APIs from <nbdkit-plugin.h> (ie. the public API).  This
doesn't affect development, it would only be for the 1.22 release.

Rich.