- Changes for EPEL 4/5 compatibility:
  - Add buildroot
  - Add %clean section and clean buildroot at start of %install
  - Patch out requirement for ExtUtils::MakeMaker ≥ 6.31 if necessary;
    ExtUtils::MakeMaker 6.17 in RHEL-4 works just fine
  - Drop Test::More ≥ 0.62 version requirement; Test::More 0.47 in RHEL-4
    works just fine
  - Drop Test::NoWarnings ≥ 0.084 version requirement; Test::NoWarnings 0.083
    in EPEL-4 works just fine
  - Add traditional dependency filtering scheme
- Disable debug package rather than removing its temporary files to avoid
  breaking the manifest test
- No need to set compiler optimization flags for noarch package
- Drop redundant explicit runtime dependency on perl(Test::Builder)
- Simplify dependency filtering
- Run the release tests too
- BR: perl(Pod::Coverage::TrustPod), perl(Test::Kwalitee), perl(Test::Pod),
  perl(Test::Pod::Coverage) and perl(Test::Portability::Files) for the
  release tests