Log Message:
Update to 1.0.4, provided by Adan Ciarcinski.
 * Changed include directory to
   $(includedir)/sigc++-1.0/sigc++
   to allow parallel installation with sigc-1.2.  Added an
   install-data-hook rule deleting the old headers.
   (Daniel Elstner)
 * Ming patch from cgustin@ibelgique.com
   (This is probably not complete, because the sigc_res.rc
   file was not in cvs - an emtpy file has been added.)
Converted to buildlink2 by me.