+ added i8086-specific methods tai_const.Create_sym_near and tai_const.Create_sym_far, which allow creating explicitly a near or far ptr const, regardless of current memory model's defaults

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25502 3ad0048d-3df7-0310-abae-a5850022a9f2
* tx86casenode.genjumptable: explicitly emit near pointers in the case jump table on i8086, regardless of the memory model

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25503 3ad0048d-3df7-0310-abae-a5850022a9f2