otherwise, the webserver might complain: 'upstream sent invalid header: "gotwebd\x20..." while reading response header from upstream' ok stsp@

Allowing such author fields breaks 'got send' towards Github for affected commits because git-index-pack --strict will error out on the server: $ git index-pack --strict pack-de791fb6a3a1961e44ac5d98d72fd533bf9277c8.pack error: object 5d6bde9eaaf27f41ae8fa7112bb45e489d3c16b9: missingSpaceBeforeEmail: invalid author/committer line - missing space before email fatal: fsck error in packed object problem encountered by landry@ ok op@

ok millert tracey

Add the standard header to this file to indicate its licence.

ok stsp@

This behaviour is already documented in got-worktree(5) but wasn't actually implemented. ok stsp@

This will be used by an upcoming regress test suite for gotd(8). ok tracey

Have the parent process send one end of the pipe directly to gotsh(1), such that repo_write can run without "sendfd". Combining "sendfd" and "recvfd" in the same process is frowned upon. ok tracey

add_delta already calls got_delta_open casting the size_t to off_t, and all the add_delta callers pass an off_t anyway; fixes an implicit off_t truncation. ok stsp@

Having those links in the user's PATH can make our send/fetch regression tests fail. We do want to talk to git-daemon during those tests, and these symlinks can get in the way of that.

ok op@

see e082ed67; ok stsp@