fixes test_rebase_no_author_info when a valid ~/.gitconfig is found. ok stsp@

This adds a new flag, `got commit -A', that allows to specify the commit author but retains the "committer" (which is obtained as usual via GOT_AUTHOR, got.conf or git config.) with lots of help from and ok stsp

we were both too strict and too lose. To avoid breaking got object parser (and to some extent ours too) we need to ensure that there aren't any line feeds, extra < or > and no trailing gibberish. The '@' is not actually required in the email. various tweaks and ok stsp

GNU dd only accepts upper-case letters for the size units.

The idea is that got patch can simply look for a line such as: commit - abcde1234567... to find the merge base commit ID to show in diff3 conflict markers. got log -p now displays commit IDs in its diff header, instead ofl tree or blob IDs. ok op@

This brings the rest of the regression test scripts in line with patch.sh.

tweak and ok stsp@

In order to portably handle the difference in how 'sed -i' works between *BSD and Linux, provide a wrapper to invoke the underying system sed(1) based on which OSTYPE is in use.

To minimise the amount of churn between the difference in date(1) and ln(n) semantics, use gdate and gln from coreutils.

GNU ln uses -T instead of -h for no-target-directory. OK thomas.adam

This patch fixes test failures related the date(1) utility. In the long term we could add a wrapper function to detect valid options for date(1) and use the variant which works on the current OS. For now, this makes some tests pass and shows us where the problems are. OK thomas.adam

ok tracey

ok stsp@

To avoid accidents commit -F opens the prepared log message in an editor so it can be reviewed before the commit is created. For non-interactive use the -N option is required in addition to -F. ok millert@

ok stsp

ok stsp

ok tracey

Previous default output remains when test cases are run individually. ok tracey

New files were added under the wrong tree in the repository if the work tree has a path prefix. Fix this problem and catch it in the existing commit_with_path_prefix regression test.