update_docs complains under windows

[mstovenour]

The pull request for issue #199 has a subtle bug under windows. It will always complain about setting the html_alias2_docs directory to a place outside the mh distribution. Apparently the stat() function always returns inode==0 on windows. Maybe there is a simpler, all be it less reliable, way to make this check.

[krkeegan]

Hmm, well we could take the simple way out and just compare the paths, if they match we give the error?

I can't think of a way to get the benefits of matching an inode number without using an inode number.

[krkeegan]

Yeah this old perl monks topic seems to confirm that the functionality we seek is not available in the base install of perl for windows. One entry suggests delving into the Win32::API class, but I am not very excited about that idea.

http://www.perlmonks.org/?node_id=859612

[krkeegan]

Michael, can you test this and see if this fixes the glitch?

[mstovenour]

Thanks! This works in both Linux and Windows. In windows I tested three cases. 1) html_alias2_docs not specified (received warning), 2) html_alias2_docs specified but ultimately pointing to the mh installation path (received warning), and 3) html_alias2_docs pointing outside the mh installation path (did not receive warning).