gettext-runtime-0.22.5-160000.2.2

- Fix crash while handling po files with malformed header and
  process them properly
  (0003-Fix-malformed-header-processing.patch, boo#1227316).

- Move envsubst requires into main package, gettext.sh is not part of
  gettext-tools, but gettext-runtime (fixes boo#1227070)

- Use %autosetup

- Fix envsubst-mini:
  + Conflicts with the 'full' envsubst
  + Require 'this-is-only-for-build-envs': ensure this does not
    find it's way out of OBS onto installations.

- add optional -mini suffix to envsubst package

- Require glibc-gconv-modules-extra by the gettext-tools packages

- Split out envsubst into a separate package
  This allows us to pull in envsubst into containers without enlarging them
  substantially. Additionally, this binary is standalone and useful outside of
  the context of gettext.

- Require this-is-only-for-build-envs by the -mini packages: ensure
  those mini packages never find their way onto a system, even when
  published.

- Add missing Requires: find to gettext-tools

- Use %patch -P N instead of deprecated %patchN.