* moved the pass_1 handling of vecnodes for arraydefs to a new virtual method
  tvecnode.first_arraydef. This will allow overriding it in the i8086 code
  generator in order to handle huge arrays.



git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28271 3ad0048d-3df7-0310-abae-a5850022a9f2