Pushed as:

5d6e4cedb56 * master gnu: xtensor: Update to 0.25.0.
5115dacc571 * gnu: xtensor: Improve package style.
e25dcf3bad5 * gnu: xtl: Update to 0.7.7.
27349661bb3 * gnu: xtl: Improve package style.
fbfff97ea94 * gnu: xsimd: Update to 11.0.0.
f165f68188c * gnu: xsimd: Improve package style.

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Oleg