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ARROW-2884: [Packaging] Support RC

.deb should use "X.Y.Z\~rcN" for deb version. "X.Y.Z" sorts earlier than "X.Y.Z\~rcN".

.rpm should use revision for rcN such as "0.rcN". Revision is "1" or larger for released versions.

See also:

  * https://fedoraproject.org/wiki/Packaging:Versioning#Prerelease_versions
  * https://fedoraproject.org/wiki/Package_Versioning_Examples

Author: Kouhei Sutou <kou@clear-code.com>

Closes #2295 from kou/packaging-support-rc and squashes the following commits:

b1f29e1f [Kouhei Sutou] [Packaging] Support RC