portable: add repo version to main string 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.

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: README: mention shortlog format When writing -portable patches, mention the format of the commit's shortlog.

portable: regress: harden coreutils check When running tests on non-Linux systems, it was just assumed that GNU coreutils had been installed. This meant that the wrapper commands for date/ln on those systems always had gdate and gln installed. Rather than assume that, check to see if the GNU coreutils versions as present, and if not echo a warning.

portable: add libbsd to README This adds libbsd to the README files to indicate a core dependency. Originally from Ashish SHUKLA.

portable: README: clarify jot for regress When running the tests under Linux, jot(1) can be found in the athena-jot package.

portable: add support for DragonFlyBSD This adds support for DragonFlyBSD.

portable: update README Mention which operating systems are supported.

README: mention bison as a required component Although configure.ac will for the presence of bison, the READMEs didn't say that was a required program. Patch from Carlos Torres

portable: fix READMEs Remove conflict markers in README, and add mailing-list link to both READMEs. Noticed by stsp

portability: fix typos Fix some typos. From Christian "naddy" Weisgerber

README: add for Github mirroring purposes Add a .github/README.md file so that the read-only clone of GoT on Github, which is used for CI purposes, explains the project. Also, update the README.portable vesion to patch.