W32: Add a g_app_info_get_all_for_type() implementation
W32: Add a g_app_info_get_all_for_type() implementation

Also add g_app_info_get_fallback_for_type() and
g_app_info_get_recommended_for_type() as proxies for
g_app_info_get_all_for_type(), until gcontenttype support is improved.

tamaskenez/glib,ieei/glib,johne53/MB3Glib,tchakabam/glib,endlessm/glib,mzabaluev/glib,endlessm/glib,mzabaluev/glib,gale320/glib,cention-sany/glib,tchakabam/glib,johne53/MB3Glib,ieei/glib,gale320/glib,gale320/glib,tchakabam/glib,mzabaluev/glib,gale320/glib,MathieuDuponchelle/glib,tchakabam/glib,tamaskenez/glib,MathieuDuponchelle/glib,johne53/MB3Glib,cention-sany/glib,mzabaluev/glib,cention-sany/glib,endlessm/glib,tamaskenez/glib,johne53/MB3Glib,johne53/MB3Glib,endlessm/glib,ieei/glib,MathieuDuponchelle/glib,mzabaluev/glib,cention-sany/glib,cention-sany/glib,ieei/glib,tamaskenez/glib,Distrotech/glib,johne53/MB3Glib,tamaskenez/glib,MathieuDuponchelle/glib,endlessm/glib,MathieuDuponchelle/glib,gale320/glib,ieei/glib,Distrotech/glib,tchakabam/glib,Distrotech/glib,Distrotech/glib,Distrotech/glib