TADIR performance #1756
All usages of TADIR aligned to use the same structure.
DELFLAG added in the structure.
2 identical structure definitions deleted.
todo: test this PR works after abapmerge has run
* change merge and staging
always push to the top of the currently selected branch
* remove branch and sha1 from stage object #365
* REPO not longer part of GIT_PORCELAIN
SET_OBJECTS moved to private
* and remove fields from constructor