[Pkg-samba-maint] updating samba to current upstream

[Michael Tokarev]

Ok.  What's the command/procedure you usually use to update the
"subsources" of samba source (like ldb/talloc) to a new upstream
version? Sort of like d/README.source in samba?

And one more question: ldb. It looks like it is really tied with the
samba version (not a surprise since this is the layout of the windows
"registry" used by the domain controller).  Is ldb backwards-compatible?
I mean, right now with 4.15 version of samba, ldb is at version 2.4,
while just-released 4.16 samba comes with ldb 2.5.  So the practical
question is: will samba 4.15 work with ldb 2.4? Or should it, or does
it _usually_ work?

I remember quite similar case with qemu and first bochsbios and next
seabios - next samba version required next version of the bios together
with some qemu-specific patches. But *usually* a later bios worked just
fine with earlier qemu. It was on a case-by-case basis, and sometimes
never samba worked with older bios too, or partly worked… ;) (but it
worked just partly with the "native" version of bios as well, since
both were buggy enough).  These days, one does need more recent bios
_only_ if one uses some features which aren't available before, --
like booting off an emulated NVME device for example. But we had a
long road to here :)

Thanks,

/mjt