libgio (recently added source files)

[John Emmas <johne53 tiscali co uk>]

I just updated from glib git master and noticed some new source files:-

      gio/gdocumentportal.c
      gio/gnetworkmonitorportal.c
      gio/gportalnotificationbackend.c
      gio/gportalsupport.c
      gio/gproxyresolverportal.c

AFAICT they're (mostly) needed when building with Unix but I'm not sure 
about 'gnetworkmonitorportal.c' and 'gproxyresolverportal.c'. Are they 
needed when building with MSVC?  I use my own MSVC projects, rather than 
the official ones so I need to know whether or not to add them.  Thanks,

John