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Use cuFile for Parquet IO when available (#7444)
Adds optional cuFile integration: - `cufile.h` is included in the build when available. - `libcufile.so` is loaded at runtime if `LIBCUDF_CUFILE_POLICY` environment variable is set to "ALWAYS" or "GDS". - cuFile compatibility mode is set through the same policy variable - "ALWAYS" means on, "GDS" means off. - cuFile is currently only used on Parquet R/W and in CSV writer. - device_read/write API can be used with file datasource/data_sink. - Added CUDA stream to `device_read`. Authors: - Vukasin Milovanovic (@vuule) Approvers: - Keith Kraus (@kkraus14) - Karthikeyan (@karthikeyann) - Devavret Makkar (@devavret) - Robert Maynard (@robertmaynard) URL: #7444
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