update config tests
update diff tests
rid index tests of macro test helpers
rid merge tests of macro test helpers, merge needs to be updated to refect new api functionality
rid note of macro test helpers
rid odb and object tests of helper macros
update oid tests, separate oid from sha1 tests
update reference tests
update repository pack tests
update repository pack tests
update tag tests
de macro repo tests
demacro walker tests
comments now in test context function
demacroify remote tests