changes from development of DscGit#15

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alx9r wants to merge 11 commits intomasterfrom

Commits on Aug 13, 2017

Commits on Aug 14, 2017

use new ZeroDsc local variable capability
alx9r
committed

Commits on Aug 15, 2017

Commits on Aug 16, 2017

test for default properties
alx9r
committed

Commits on Aug 17, 2017

more public interface testing
alx9r
committed