[SCM] Samba Shared Repository - branch master updated - release-4-0-0alpha8-154-g826ee30

[tridge at samba.org]

Hi Jeremy,

 > What about Metze's suggestion, wouldn't that keep the bugfix
 > without breaking the ABI ?

It's a neat idea certainly, but I wonder how long we have to keep it
in? 

It isn't completely without cost, as it creates a new trap for
programmers. If someone forgets to #include <talloc.h> in some module
in their application but they use these parts of the talloc API then
they will not get a compile/link error, they'll get these ABI
compatibility functions. In this case the two functions are very
similar, so it would probably cause very few problems, but if we ever
want to get rid of these ABI compat functions then we'll need to bump
the soname number anyway.

I don't want the tail wagging the dog in Samba. I don't want the fact
that some of our code is used in shared libraries to constrain the way
we develop Samba, and how we fix bugs. With .so numbering we don't
need to be constrained and we can fix bugs in the best way we can
find.

If talloc was some massive library and each time we up the soname
number we cost people another GB of disk, then sure, we might be
reticent to do it. 

As it is, talloc is tiny, the cost of upping an soname number is tiny,
and it means we get a clean fix in the code without backwards compat
clutter.

Cheers, Tridge