Improve Makefile dependency-checking on Windows
Improve Makefile dependency-checking on Windows

Current issues: highlighting URLs doesn't work on Windows, but I'm about
to do away with that entire feature for Win32 altogether (since we can't
have underlined URLs anyway, we're only left with different colours. Not
worth the effort).

Alhadis/Snippets,Alhadis/Snippets,Alhadis/Snippets,Alhadis/Snippets,Alhadis/Snippets