+ implemented crt.delay for i8086-msdos

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24680 3ad0048d-3df7-0310-abae-a5850022a9f2
* use rep movsw in crt.dosmemmove for i8086-msdos

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24681 3ad0048d-3df7-0310-abae-a5850022a9f2