test-gvfs-protocol.c, t5799-gvfs-helper.sh: unit tests for gvfs-helper#216

jeffhostetler wants to merge 1 commit intomicrosoft:features/sparse-checkout-2.23.0microsoft/git:features/sparse-checkout-2.23.0from

jeffhostetler:users/jeffhost/test-gvfs-helperjeffhostetler/git:users/jeffhost/test-gvfs-helperCopy head branch name to clipboard