dev-lang/gdl: Revbump post dep change

Signed-off-by: Michał Górny <mgorny@gentoo.org>

diff --git a/dev-lang/gdl/gdl-0.9.6-r2.ebuild b/dev-lang/gdl/gdl-0.9.6-r3.ebuild
similarity index 100%
rename from dev-lang/gdl/gdl-0.9.6-r2.ebuild
rename to dev-lang/gdl/gdl-0.9.6-r3.ebuild