pidgin/pidgin

Merged in fbellet/pidgin/port-changes-from-branch-2.x.y-to-default (pull request #632)

Port changes from branch 2.x.y to default

Approved-by: Eion Robb
Approved-by: John Bailey
Approved-by: Gary Kramlich
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in
sub/libpurple/data/purple-url-handler.desktop.in
sub/libpurple/protocols/null/nullprpl.c
sub/pidgin/data/im.pidgin.Pidgin.desktop.in