use /, : for dirs, paths on Windows?

[Ben Pfaff]

Currently we use \ and ; for dirs and paths on Windows, because
that's the local convention.  However, I understand that most GNU
software uses / and :, even on Windows.  Being uniform would
allow use to get rid of DIR_SEPARATOR and PATH_SEPARATOR, which
are kind of ugly.

What do you guys think?

-- 
"Implementation details are beyond the scope of the Java virtual
 machine specification.  One should not assume that every virtual
 machine implementation contains a giant squid."
--"Mr. Bunny's Big Cup o' Java"