• Fix License tag.
• Package COPYING.txt and use it with license macro.
  (see libdfp-license.patch and upstream pull-request
  https://github.com/libdfp/libdfp/pull/86)
• Remove Group and BuildRoot tags.
• Use buildroot macro instead of RPM_BUILD_ROOT variable.
• Do not remove buildroot during install step.
• Use pushd/popd instead of cd commands.
• Remove clean section.
• Fix changelog in order to not include macros.
• Print summary of failing tests in the output of make check.
  (see libdfp-tests.patch and upstream pull-request
  https://github.com/libdfp/libdfp/pull/87)

Signed-off-by: Stefan Liebler stli@linux.ibm.com

According to https://fedoraproject.org/wiki/Licensing:Main?rd=Licensing#Good_Licenses, the correct short name for the License tag for LGPLv2.1 is just LGPLv2:
GNU Lesser General Public License v2 (or 2.1) only

@tuliom: Please double check!

For the two new patches, I've also created pull-requests on upstream-libdfp.