Dennis Heimbigner 1552d894a2 Cleanup a number of issues. ...

re: Issue https://github.com/Unidata/netcdf-c/issues/2748

This PR fixes a number of issues and bugs.

## s3cleanup fixes
* Delete extraneous s3cleanup.sh related files.
* Remove duplicate s3cleanup.uids entries.

## Support the Google S3 API
* Add code to recognize "storage.gooleapis.com"
* Add extra code to track the kind of server being accessed: unknown, Amazon, Google.
* Add a new mode flag "gs3" (analog to "s3") to support this api.
* Modify the S3 URL code to support this case.
* Modify the listobjects result parsing because Google returns some non-standard XML elements.
* Change signature and calls for NC_s3urlrebuild.

## Handle corrupt Zarr files where shape is empty for a variable.
Modify behavior when a variable's "shape" dictionary entry.
Previously it returned an error, but now it suppresses such a variable.
This change makes it possible to read non-corrupt data from the file.
Also added a test case.

## Misc. Other Changes
* Fix the nclog level handling to suppress output by default.
* Fix de-duplicates code in ncuri.c
* Restore testing of iridl.ldeo.columbia.edu.
* Fix bug in define_vars() which did not always do a proper reclaim between variables.

2023-10-08 11:22:52 -06:00

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