When compiling got-portable from source, outside of an official release tarball, it's often helpful to know which commit the binary was built from, especially for diagnostic purposes. This adds an extra hook to AC_INIT to derive whether -portable is being built in-tree or via a release tarball.

Rename GOT_PACK_NUM_TEMPFILES in gotwebd, since it clashes with a name already used in lib/repository.c. ok tracey

ok stsp@

Don't move the selection cursor due to a bogus offset after closing child views following use of 'B', C-l, and backspace log view key maps. ok stsp@

Replace view->mode == TOG_VIEW_LOG checks for requesting commits to populate the log view with calls to view->resize(). ok stsp@

ok op@

When switching a child log view from a h- to a v-split, new log lines are empty. Rather than (mis)trace height and (not) call request_log_commits(), let resize_log_view() do the math and request commits if needed to draw new lines. ok op@

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.

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

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.

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

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

Document how to release a new `-portable` version.

Add a section to the README files explaining how -portable is maintained.

Ensure that the remote GH repo is fetched from.

Found by llvm's scan-build. OK stsp

Found by llvm's scan-build. OK stsp

Found by llvm's scan-build (bad free). OK stsp

This can't happen in practice, but llvm's scan-build doesn't know this. OK stsp

Found by llvm's scan-build (dead store). OK stsp

Found by llvm's scan-build (dead store). OK stsp