pidgin/pidgin

Remove -Wno-sign-compare and backport fixes from default.
release-2.x.y
2014-11-13, Elliott Sales de Andrade
a437550a9308
Remove -Wno-sign-compare and backport fixes from default.
For information on hacking on Pidgin, Finch, or libpurple, see:
http://developer.pidgin.im