sg3_utils: sg_sat_datetime command to get/set the date & time on ATA devices.

[jrbauer-wdc]

Similar to sg_timestamp for SCSI, sg_sat_datetime allows the date and time (timestamp) to be set-on and returned-from ATA devices. This provides the ability to syncronize the system clock with the device. The SET DATE & TIME EXT and READ LOG [DMA] EXT ATA commands are sent using ATA PASSTHROUGH SCSI commands to set and retrieve the date and time on the device.

[doug-gilbert]

Thanks, this is great. Keeping the options similar to sg_timestamp (for SCSI devices) should help users. I merged it upstream, made some formatting changes and referenced it from sg_timestamp's manpage. The result is now mirrored it here. There was a minor CI problem (see the Actions tab) which I fixed. Often get hiccups with the MinGW compiler

[jrbauer-wdc]

Thanks for picking this up, Doug. I compiled and tested with Cygwin, but not MinGW. I'll make sure to compile and test with MinGW in future contributions. Thanks for fixing that up and for adding the reference in sg_timestamp.