... after moving creation of MYSQL_BIND structures to a separate class.

This change adds the code for prepared statement creation and the
template for retrieving information from the database.

Also includes first unit test, which fails.

with fixing Conflicts:

with fixing conflicts in
	ChangeLog
	examples/README

this works around a bit awkward installation setup where there's a link
from "python3" to "python3.x" but not from "python3-config" to the
corresponding "python3.x-config".  That happens for recent versions of
Homebrew.

Sunstudio is unhappy with plain NULL inside EXPECT_EQ and thinks it is
int. This makes it think otherwise.

This should fix compilation issue on sunstudio.

so it sounds more natural as an English term.

this branch introduced is_failed() (and failed() was already defined for
a different a purpose), so for consistency it would be better to name
the running version is_xxx too.

this should fix the main problem of this ticket.

should be pretty trivial, so added a couple of test cases as part of
other tests.

this fixes the test case introduced at the beginning of the branch.

the configurator should be able to delete a component to be removed
even if the it's failing (unexpectedly).  The current implementation
doesn't handle that condition correctly.

as the new code actually doesn't do rollback operation internally,
even though the observable effect is the same.

the previous one was not really accurate and was confusing.

getClientListClasses() was removed.  It's not used anymore.
a few methods named with "ClientList" were renamed with adding "DataSrc".
The resulting names are a bit long, but since there's no namespace
qualification, simply saying "client" can be confusing (it could be
interpreted to mean DNS clients, for example).

This is pure cleanup.  This function already doesn't use the server.

now configureDataSource() can take time.