dev-libs/libxslt: Add blocker for util/pkgconfig before 0.29.2.

This fixes a breakage on ToT.

Pull request: https://github.com/gentoo/gentoo/pull/16976

BUG=chromium:1113478
TEST=./update_chroot

Change-Id: I79a0eb6e1af631b46858093d22ff6a5d995976ac
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2340393
Commit-Queue: Allen Webb <allenwebb@google.com>
Reviewed-by: Alexandre Courbot <acourbot@chromium.org>
Tested-by: Allen Webb <allenwebb@google.com>
2 files changed