[M3commit] [modula3/cm3] ca298f: Fix one failure in p035.

[Rodney Bates]

  Branch: refs/heads/master
  Home:   https://github.com/modula3/cm3
  Commit: ca298f83b558046afc0431ed768616ea97bf3119
      https://github.com/modula3/cm3/commit/ca298f83b558046afc0431ed768616ea97bf3119
  Author: Rodney Bates <rodney.m.bates at acm.org>
  Date:   2015-09-11 (Fri, 11 Sep 2015)

  Changed paths:
    M m3-sys/llvm3.6.1/src/M3CG_LLVM.m3

  Log Message:
  -----------
  Fix one failure in p035.

Every nested procedure needs a static link, even if there are no
up-level referenced variables in its proper static ancestery, in
order to be able to create an environment for another call.

In any case, we will need this in order for a debugger to work.

Also add comments so I can understand how up-level addressing works.

p035 now suffers an unrelated failure, later.