* specify AT_DATA in all references to the tobjectdef.vmt_mangledname symbol.
  This fixes a lot of bugs, related to objects and classes in the i8086 medium
  memory model



git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25794 3ad0048d-3df7-0310-abae-a5850022a9f2