In order to facilitate "reproducible" builds, this patch series also changes the build to no longer include the system hostname nor build time on default "clean" builds. Specifically, if git is available, the git repo is not in a "dirty" state, and gcc/binutils versions are successfully extracted, then the default version string will just contain the git version information. However, should any of the preceding tests not succeed, then the version will continue to include the hostname and build time.
FYI, I committed this series.
Hmm, just noticed that only git builds are considered being "clean". That implies builds from release tarballs will *not* be considered clean. Was that intentional?