WKGR='10.7.5_x86_xnu_stage_00'
TARS='
http://www.opensource.apple.com/tarballs/bootstrap_cmds/bootstrap_cmds-78.tar.gz
http://www.opensource.apple.com/tarballs/cxxfilt/cxxfilt-9.tar.gz
http://www.opensource.apple.com/tarballs/dtrace/dtrace-90.tar.gz
'
[ -d "$WKGR" ] || mkdir "$WKGR"	;
(cd "$WKGR" &&
for f in $TARS; do
  curl -RO -C - "$f"
done
)