Generate symbol derivatives for outputs when requested #3968

Job	Run time
VFX2021 gcc9/C++17 llvm11 py3.7 oiio2.4 sse4 batch-b8avx2	18m 6s
Ubuntu Debug gcc7/C++17 llvm9 py3.7 oiio2.3 exr2.4 sse4 exr2.4	26m 20s
VFX2022 gcc9/C++17 llvm13 py3.9 exr3.1 oiio-rel avx2	19m 57s
macos-13 C++17 py3.11 MacOS-13 llvm17	25m 28s
VFX2023 gcc11/C++17 llvm15 py3.10 oiio-rel avx2	21m 9s
Ubuntu gcc10/C++17 llvm10 oiio-2.5 avx2	9m 10s
VFX2022 clang12/C++17 llvm12 oiio-main py3.9 avx2 batch-avx512	23m 50s
macos-14 C++17 py3.11 MacOS-14-ARM llvm17	9m 46s
VFX2023 GPU Cuda11 gcc11/C++17 llvm15 py3.10 OIIO-main avx2	7m 44s
Ubuntu latest releases gcc11/C++17 llvm17 exr3.2 py3.10 avx2 batch-b16avx512	28m 56s
VFX2022 gcc9/C++17 llvm11 py3.9 exr3.1 oiio2.3 sse2 batch-b4sse2	20m 51s
VFX2024 gcc11/C++17 llvm17 py3.11 boost1.82 oiio-rel avx2	25m 20s
Ubuntu bleeding edge gcc12/C++17 llvm17 oiio/ocio/exr/pybind-main py3.10 avx2 batch-b16avx512	20m 36s
VFX2021 oldest everything gcc9/C++17 llvm9 py3.7 oiio2.3 no-simd	11m 14s
VFX2024 sanitizers	33m 15s
Ubuntu clang14/C++17 llvm14 py3.8 avx2 batch-b16avx512	23m 23s
VFX2023 abi check	14m 26s
Ubuntu clang-format	5m 13s
VFX2023 icc/C++17 llvm14 py3.9 oiio-main avx2	32m 32s
VFX2023 icx/C++17 llvm14 py3.9 oiio2.3 avx2	23m 31s
	6h 40m 47s

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