It looks like (compile-internal) has been deleted, finally.  This 
patch
(see attached) adds a check to use the new (compilation-start) 
while
still being compatible with really old versions.

Is it really necessary to keep the legacy call in there?... how 
far back
should we support old versions?  My computer ships with v22, but 
my OS
is from 2013, and the new procedure was already marked as the one 
to use
by that point.

Unrelated... ...

  I'm not very familiar with Emacs' dynamic loader.  Does it 
  optimize
  out the branch instruction on load since it's a comparison of a
  constant? or does compiled code get interpreted literally?  It's 
  only
  a quick branch and calling the external procedure takes much 
  longer,
  but I used the version check instead of (fboundp) since it's 
  probably
  faster than the obarray lookup if the check is performed every 
  time
  you call the procedure.  Old assembly habits die hard.

Anyways, on to the patch file.