Update Addresses to 0.4.8

Notable changes include:

Since 0.4.8:
============

  o relative link during framework installing, helps building in a separate
    root, like when building RPMs
  o fixed some portability issues of the Framework to solaris and windows
  o handle also PNG images
  o fixed a link in the framework from absolute to relative, for FHS
    (fix by Richard Stonehouse)
  o Many fixes in VCFviewer GWorkspace inspector, thanks also to
    Philippe Roussel
  o use GSMimeDocument to decode base64 instead of custom code
  o Makefiles work on windows
  o Birthday support (for SimpleAgenda)
  o fixes in VCF import (encoding, CR-LF)
  o fixed deleting of a person

Since 0.4.7:
============

  o Updated Makefiles to GNUstep Make 2.0
  o Fixed text editing to work with current GNUstep gui
  o Improved import of VCF files: tries to interpret HEX (by Guenther
    Noack) and the escape \, from Apple cards


(rh)