dylan-lang/opendylan — pull request #755 by waywardmonkeys (2014-05-19 00:42:00+00:00)
Title: [dfmc-conditions] with-simple-abort-retry-restart allows non-constant expressions

This is from my work in progress on restoring compilation passes.

This is required when the macro is used like:

````dylan
with-simple-abort-retry-restart
(format-to-string("Abort %s and continue.", pass.name),
format-to-string("Restart %s.", pass.name))
...
end;
````