heh-m.cha and fm

[Hugh Hoover <heh>]

My changes file heh-m.cha eliminates the secondary process used to dispatch
FM events that I introduced in heh-i.cha.  This change seems to make the
implementation more robust and eliminates a debugging problem (where the
secondary process steals some chars from smalltalk controllers).  I tested
it with the tapestrytester and all seems to work fine.  I recommend filing
it in.
--Hugh