Пакет gear-sh-functions: Информация

- Added exclude= option for tar: and zip: directives
  (by Alexey Gladkov; closes: #39801).
- describe-specfile (by Gleb Fotengauer-Malinovskiy):
  + new utility, prints name and version info for specfile.
- gear:
  + change the current workdir back before the last command invocation.
- gear-changelog (by Arseny Maslennikov):
  + added --header-only option to only print changelog header.
- gear-create-tag:
  + refuse to create tags that do not define all specsubst variables;
  + implemented -s/--specsubst option (closes: #39783).
- gear-update-sh-functions (by Gleb Fotengauer-Malinovskiy):
  + fixed permissions (755 -> 644).
- Moved gear-sh-functions and describe-specfile to separate
  subpackages (by Gleb Fotengauer-Malinovskiy).
- Updated bash completions.

- Updated git-core requirement.
- gear-srpmimport: expanded help text on --stdin option a bit.
- tests: sort output before comparison in one more place (by Ivan Zakharyaschev).

- Re-enable multi-threaded compression for xz and zstd.