pidgin/pidgin

ea1c2cf86b55
Tell glib our actual minimum required version

Testing Done:
Compiled and verified we didn't get any new deprecation warnings.

Reviewed at https://reviews.imfreedom.org/r/840/
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