/usr/share/common-lisp/source/mcclim/Experimental/ is in cl-mcclim 0.9.6.dfsg.cvs20100315-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/common-lisp/source/mcclim/Experimental/freetype/
/usr/share/common-lisp/source/mcclim/Experimental/freetype/fontconfig.lisp
/usr/share/common-lisp/source/mcclim/Experimental/freetype/freetype-cffi.lisp
/usr/share/common-lisp/source/mcclim/Experimental/freetype/freetype-ffi.lisp
/usr/share/common-lisp/source/mcclim/Experimental/freetype/freetype-fonts-alien.lisp
/usr/share/common-lisp/source/mcclim/Experimental/freetype/freetype-fonts-cffi.lisp
/usr/share/common-lisp/source/mcclim/Experimental/freetype/freetype-package-cffi.lisp
/usr/share/common-lisp/source/mcclim/Experimental/freetype/mcclim-freetype.asd
/usr/share/common-lisp/source/mcclim/Experimental/freetype/mcclim-native-ttf.lisp
/usr/share/common-lisp/source/mcclim/Experimental/freetype/mcclim-truetype.asd
/usr/share/common-lisp/source/mcclim/Experimental/freetype/truetype-package.lisp
/usr/share/common-lisp/source/mcclim/Experimental/freetype/xrender-fonts.lisp
/usr/share/common-lisp/source/mcclim/Experimental/menu-choose.lisp
/usr/share/common-lisp/source/mcclim/Experimental/pixel-format.lisp
/usr/share/common-lisp/source/mcclim/Experimental/png.lisp
/usr/share/common-lisp/source/mcclim/Experimental/pointer-doc-hack.lisp
/usr/share/common-lisp/source/mcclim/Experimental/pprint/
/usr/share/common-lisp/source/mcclim/Experimental/pprint/pprint.lisp
/usr/share/common-lisp/source/mcclim/Experimental/pprint/sbcl-0.8alpha.0.patch
/usr/share/common-lisp/source/mcclim/Experimental/tree-with-cross-edges/
/usr/share/common-lisp/source/mcclim/Experimental/tree-with-cross-edges/mcclim-tree-with-cross-edges.asd
/usr/share/common-lisp/source/mcclim/Experimental/tree-with-cross-edges/tree-with-cross-edges.lisp