This update for rpmrebuild fixes the following issues:

update to 2.21:

  * allow multiline spec changes (Michel Bourget)
  * fix rpm2archive syntax for rhel 9 (Blair Zajac)
  * skip install test for gpg-pubkey packages

update to 2.20:

  * cpio is legacy, replace it by tar (rpm2cpio => rpm2archive)
  * remove warning : Explicit %attr() mode not applicable to symlink
  * bugfix : the comment-missing option was not working on rpm files
  * tests : clean generated files
  * tests : only use RPMREBUILD_IGNORE_FILE_ERROR if necessary
  * tests : add test numbers in code
  * fix build on fedora 41 (buildroot)
  * use RPMREBUILD_NOQUOTE on some distribution if filenames contains meta-car
  * bugfix comment missing with spec-only on rpm file
  * bugfix file with space

update to 2.19:

  * Set the directory mode to '-' instead of omit (xujing)
  * support filetrigger (merged from github repo)
  * fix IsPackageInstalled code
  * fix trailing space (yixian)
  * fix backslash in filename
  * add rpm tag BUGURL
  * add rpm tag VCS
  * new plugin empty_section
  * add in specfile a guide to use rpmbuild if spec-only
  * new plugin replacefile
  * new env variable RPMREBUILD_IGNORE_FILE_ERROR (allow to work if not root)

update to 2.18:

  * bugs fix (thanks xujing)