more msdos cross-compile fixes

undefined reference to g.variables if certain parts of
drawing.c are included in host-side utilities, so
surround the offending code in
->  #if !defined(CROSSCOMPILE) || defined(CROSSCOMPILE_TARGET)

sys/msdos/msdos-cross-compile.sh

@@ -31,7 +31,7 @@ DJGPP_URL="$DJGPP_URL$DJGPP_FILE"
 
 # export
 
-if [ ! -d lib]; then
+if [ ! -d lib ]; then
 mkdir -p lib
 fi