Mercurial does not have built-in support for converting line-endings. This is a
settings file for hg eol (http://mercurial.selenic.com/wiki/EolExtension), an
extension that replicates the behaviour of git with core.autocrlf=true.

Mercurial uses Python regex syntax by default in its .hgignore files. Adding
this line to .gitignore overrides that setting, so hg-git users can just create
a hardlink to it (e.g "mklink /H .hgignore .gitignore" on Windows) to use it.
Signed-off-by: Stuart Webster <sw_webster@hotmail.com>