Make Kopete build with giflib 5.1.0 and up.
Make Kopete build with giflib 5.1.0 and up.

REVIEW: 120047
CCBUG: 335519

josh-wambua/kopete,josh-wambua/kopete,josh-wambua/kopete,josh-wambua/kopete,josh-wambua/kopete,josh-wambua/kopete,josh-wambua/kopete