GitLab

* Catch user-library-generated exceptions.
* Remove hook registration function (no longer needed with a singleton
  ServerHooks object.
* Miscellaneous documentation changes.

This manages LibraryManagers created for the libraries loaded.

LibraryManager can now load and unload libraries.  Multiple
libraries can be loaded at the same time and the callouts
execute correctly.

runUnload() still has to be added.

Added ability to run the load function and checked that it can
register callouts.

Also started to add logging.

Able to open and close libraries, check for the version()
function and call it.

a) This is now a non-copyable singleton class, and pointers
to a ServerHooks object have been removed from other classes.
b) Added a getHookName() method to the CalloutHandle class to allow
callouts to determine the hook to which they are attached. (This
change was made principally to aid writing test cases.

The hooks framework now has its own directory in "lib" instead of
living in "util".

The list.clear() method is new in python3.3. Use equivalent though less
elegantly written code to do the same.

Resolver research document about mixed resolver/authoritative mode

As a result of the experiment, come to the conclusion the receptionist
is easy enough to implement, flexible enough and fast enough to try and
implement it.

Write some advantages and disadvantages of each method how to solve it.

Add commands to list MsgQ's users and group subscriptions.

Notify about subscriptions and unsubscriptions.

The spec file is not generated, so use B10_FROM_SOURCE, not
B10_FROM_BUILD.

Conflicts:
	ChangeLog