[M3commit] [modula3/cm3] 087a3d: Fix bugs in passing set parameters.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/modula3/cm3
  Commit: 087a3dee7e55f995f6c0bd3efe26fc4656a890f5
      https://github.com/modula3/cm3/commit/087a3dee7e55f995f6c0bd3efe26fc4656a890f5
  Author: Rodney Bates <rodney.m.bates at acm.org>
  Date:   2017-09-25 (Mon, 25 Sep 2017)

  Changed paths:
    M m3-sys/m3front/src/values/Formal.m3

  Log Message:
  -----------
  Fix bugs in passing set parameters.

-Remove an incorrect assertion.
-Fix cases that were failing to make a needed copy.