isync Merge Request #8: Update spec file (rejected)

I:

1. Added the distro ID to the release (e.g. 1.5.0.rh41 for RedHat 41).
2. Made the License tag SPDX-compliant.
3. Added the download URL for the source.
4. Removed the hard-coded path for BuildRoot. %{_temppath} evaluates to
   /var/tmp by default anyway.
5. Added BuildRequires for the necessary packages to build it.
6. Added -q to setup to appease rpmlint.
7. Added --docdir as a configure option so that it'll build on OpenSUSE.
8. Replaced the deprecated $RPM_BUILD_ROOT with %{buildroot}. Actually,
   the BuildRoot tag and cleaning it up are deprecated too (rpmbuild
   does it automatically), but rpmlint complains if you don't use them.

I didn't however remove Packager, even though rpmlint complains about
it.

[Oswald Buddenhagen]

huh, crap, this effin' system didn't actually post my comments, and now the draft is gone. :-(

[Oswald Buddenhagen]

so the upshot from what i remember:

• please clean up the branch (squash, etc.)
• use sensible committer info
• the packager line is only there to distinguish it from "proper" rpms, and i don't really care

i'll re-review it properly when i see an update.