add ZLIB, other changes #8953

Job	Run time
windows-2019 VS2019	17m 31s
Ubuntu latest releases gcc13 C++20 py3.12 avx2 exr3.3 ocio2.4	12m 39s
windows-2022 VS2022	17m 33s
Ubuntu bleeding edge gcc14 C++20 py3.12 OCIO/libtiff/exr-main avx2	5m 33s
macos-13 appleclang14/C++17 py3.11 MacOS-13-Intel	17m 16s
Ubuntu all local builds gcc12 C++17 avx2 exr3.2 ocio2.3	2m 23s
macos-14 appleclang15/C++20 py3.12 MacOS-14-ARM	6m 15s
VFX2021 gcc9/C++17 py3.7 exr3.1 ocio2.0	13m 32s
Ubuntu clang14 C++20 avx2 exr3.1 ocio2.1	14m 40s
macos-15 appleclang16/C++20 py3.13 MacOS-15-ARM	5m 52s
VFX2021 clang10/C++17 avx2 exr3.1 ocio2.0	5m 47s
Ubuntu debug gcc9/C++17, sse4.2, exr3.1	12m 32s
VFX2022 gcc9/C++17 py39 exr3.1 ocio2.1	6m 6s
Ubuntu static libs gcc9 C++17 exr2.4	13m 2s
VFX2022 clang13/C++17 py39 avx2 exr3.1 ocio2.1	13m 11s
Ubuntu clang-format	3m 16s
VFX2022 icc/C++17 py3.9 exr3.1 ocio2.1 qt5.15	14m 8s
VFX2022 icx/C++17 py3.9 exr3.1 ocio2.2 qt5.15	9m 56s
VFX2024 sanitizers	11m 34s
VFX2023 gcc11/C++17 py3.10 exr3.1 ocio2.2	6m 21s
VFX2024 gcc11/C++17 py3.11 exr3.2 ocio2.3	7m 58s
VFX2021 oldest gcc9.3/C++17 py3.7 exr-3.1	6m 11s
VFX2021 hobbled gcc9.3/C++17 py3.7 exr-3.1 no-sse	6m 6s
VFX2023 abi check	6m 4s
	3h 55m 26s

Provide feedback