reset committer during rebase and histedit ok op@

do not forget to free(cwd) at the end of cmd_rebase() and cmd_histedit()

fix wrong error return in cmd_commit()

We don't care about the length of the read line. Found by llvm's scan-build (dead store). OK stsp

Dot not ignore error from got_object_id_str(). Found by llvm's scan-build (dead store). OK stsp

typo in cat_commit otherwise prints the author instead of the committer

got commit: add flag to specify the author 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

fix email address parsing 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

histedit: make sure mesg is only used after pick or edit It doesn't really make sense to use mesg after a fold or drop, or after another mesg. it currently "works" as intended, but the behaviour is confusing and not useful, better abort the operation as it's probably not what the user intended. Suggested by and ok stsp@

add signer_id option to got.conf(5) Setting this option will cause 'got tag' to sign all created tags using the SSH key, unless overridden by the -s flag. ok stsp@

move 'got init' command to 'gotadmin init' This functionality is better suited for gotadmin because it is technically a server-side repository operation when we consider the 'got' tool as the client-side tool. I have plans to move 'got import' into gotadmin as well. ok op@

include system headers required for got_date.h directly, not indirectly

got tag -V is like tag -l with verification, fix option-conflicts accordingly

add -v option to 'got tag' usage string

add option-conflict handling for 'got tag' -s and -V options