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added compression options to SEGYImport; modified core to support passing these options; updated python bindings for the options

Conflicts:
	src/OpenVDS/VDS/VolumeDataStore.cpp
	tests/VDS/DeserializeVolumeDataTest.cpp

Merge branch 'community-master' into feature/GONRG-397_pass_gcp_credentials_via_options and update Python wrappers accordingly

Implement AWSOpenOptions init method with default arguments for region and endpointOverride (like the C++ API).

if cmake parameters TEST_SEGY_FILE and TEST_URL with optional
TEST_CONNECTION then the test will used said parameters import the SEGY
file with default parameters, and then export the VDS to a local SEGY
file. It will then do a SHA256 hash of both files and validate that the
hashes er the same.

Add overloads allowing create and open to be called only with url. And
also add GlobalState functionality

Yvon Halbwachs authored Aug 26, 2020 and Jørgen Lind committed Sep 01, 2020

Also adds support to read R64 data through the java interface

This can be used to keep track of global counters.