New pgbench functions are misnamed

I noticed that commit 7e137f846 added functions named max() and min()
to pgbench's expression syntax.  Unfortunately, these functions have
zilch to do with what max() and min() do in SQL.  They're actually more
like the greatest() and least() server-side functions.

While I can't imagine that we'd ever want to implement true aggregates
in pgbench expressions, it still seems like this is a recipe for
confusion.  Shouldn't we rename these to greatest() and least()?
        regards, tom lane