fix wrong error return in cmd_commit()

comment tweak

got_repo_pack_fds_close: don't close(0) got_repo_pack_fds_close will try to close all of the GOT_PACK_NUM_TEMPFILES fds, even the ones that didn't manage to get a value from got_opentempfd(), which would result in a close(0) if we do not initialize to -1 here.

Correctly track if we sent more data since the last time we looked. With the narrow scope of bytes_sent_cur it would always be zero, and we would always update progress. Found by llvm's scan-build (Dead store). OK stsp

portable: MacOS: export env from configure Compiling -portable on MacOS directly would never have worked, as the environment was only being set when run under CI. Move these checks into configure.ac so that they propagate out to make, etc. Noticed by cjones on IRC.

portable: remove stray .orig files These shouldn't have been commited, and probably predate when the .gitignore file was updated to filter out .orig files.

portable: gotwebd: add headers to EXTRA_DIST Add the header files under gotwebd to EXTRA_DIST so that they're included in the distribution tarball.

portable: update READMEs with release info Document how to release a new `-portable` version.

portable: explain how to sync/update -portable Add a section to the README files explaining how -portable is maintained.

portable: maintscript: add GH remote Ensure that the remote GH repo is fetched from.

Prevent use-after-free of packed_refs_path in error path. Found by llvm's scan-build. OK stsp

Prevent memory leak when asprintf fails. Found by llvm's scan-build. OK stsp

Make sure got_repo_pack_fds_close() frees a malloc'ed pointer. Found by llvm's scan-build (bad free). OK stsp

If the first readdir() returns NULL err is uninitialized. This can't happen in practice, but llvm's scan-build doesn't know this. OK stsp

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

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

Do not ignore error from format_author(). 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

path_got is unused and never assigned, no need to free it OK stsp

Do not ignore I/O errors. Found by llvm's scan-build (dead store). OK stsp

Don't chug along if repo format version is unsupported. Found by llvm's scan-build (dead store). OK stsp

gotwebd: fix potential type mismatch between format specifier and argument ok tracey

tog: blame view keymap to open log of annotated line As per stsp's TODO item: open a log view of the selected line with 'L'. helped by and ok stsp@

regress: add missing return in error path

document pull request workflow in got.1 man page With permission from Jelmer Vernooij to use my pull request config for Dulwich, and Jelmer's name, as a real-life example. ok tracey, jamsek