be gathered during reporting.
Removed the references to accounts and such from the mask logic, which means
that the value expression "acount =~ /foo/" is needed in place of just
"/foo/".
old system (for example, the meaning of 'a') has yet to be restored. In the
new scheme, this will be done by definition a function outside of the value
expression logic, rather than the tight coupling between journal innards and
value expressions that occurred in 2.x.
