+ added trefaddr.addr_seg for referencing the segment of a symbol

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24859 3ad0048d-3df7-0310-abae-a5850022a9f2
+ i8086 specific far proc aware implementation of ttypeconvnode.second_proc_to_procvar

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24860 3ad0048d-3df7-0310-abae-a5850022a9f2
+ i8086/n8086cnv.pas added to lazarus project

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24861 3ad0048d-3df7-0310-abae-a5850022a9f2