The variable w32-untranslated-filesystem-list defines whole
directory trees that should not have CR/LF autodetection performed on
them. The list can be manipulated with the functions
w32-add-untranslated-filesystem and
w32-remove-untranslated-filesystem. With auto-detection in
recent versions of Emacs, this is seldom useful for existing files,
but can still be used to influence the choice of line ends for newly
created files.