* fixes some allochwnd functions for FPC_UNICODE_RTL (use -A explicitly)

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24690 3ad0048d-3df7-0310-abae-a5850022a9f2
+ implemented dos.FindFirst/FindNext/FindClose for i8086-msdos

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24691 3ad0048d-3df7-0310-abae-a5850022a9f2