GitLab

Remove the READ/WRITE and DEFAULT macros by replacing them with
functions that thrown an exception on failure.  Other modifications
also made to make the code consistent with this model.

name confirmed with Likun

sigh.

It should not exist in the real namespace (unless there's something as
well).

case.

the point of the test more accurately.

lines.

Conflicts:
	src/lib/datasrc/memory_datasrc.cc