sys-libs/libcxxabi: -9999 → -10.0.0.9999

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

diff --git a/sys-libs/libcxxabi/libcxxabi-9999.ebuild b/sys-libs/libcxxabi/libcxxabi-10.0.0.9999.ebuild
similarity index 100%
rename from sys-libs/libcxxabi/libcxxabi-9999.ebuild
rename to sys-libs/libcxxabi/libcxxabi-10.0.0.9999.ebuild