at the end of compiling a unit, also remove it from its owning procsym
    in case the procsym does get written to the ppu (possible because you
    can have extra overloads in the implementation) (mantis #25283)
   o also fixes webtbf/tw4103 on the platforms where this still failed
     (on the platforms where it worked, it worked by accedent since the
      compiler was accessing memory of a freed procdef)

git-svn-id: trunk@35309 -