…nce we found a use case for it. Note that the command's syntax was changed for consistency.
…ocal pairing to be the absolute path to the repository, not "." This was a reversion caused by the relative path changes in 5.20150113. Other uses of addAuthorizedKeys seem to be ok. If the user enters a directory like ~/annex, it writes GIT_ANNEX_SHELL_DIRECTORY=annex, and git-annex-shell assumes that's relative to HOME.
…ich is rejected on the other end for security reasons.