why does cvs frequently list some doc/.../*.sgml files as modified?

[Skip Montanaro <skip pobox com>]

When I "cvs up", CVS frequently tells me that various sgml files are
modified.  For example, today these glib and atk files were listed as
modified (haven't gotten further than these two libraries yet, I'm sure
there's more):

    glib/docs/reference/glib/tmpl/unicode.sgml
    atk/docs/tmpl/atk-unused.sgml
    atk/docs/tmpl/atktable.sgml

and one atk file listed a conflict:

    atk/docs/tmpl/atktext.sgml

I've never touched any of these files.  What is it about the build process
that hoses them?  Can it be fixed?

-- 
Skip Montanaro (skip pobox com)
http://www.mojam.com/
http://www.musi-cal.com/