gdu-5.27.0-bp156.1.1

- Packaging improvements:
  * Drop autosetup -p 1 arg only needed when package has patches
  * Build PIE with pattern that may become recommended procedure:
    %%ifnarch ppc64 GOFLAGS="-buildmode=pie" %%endif go build
    A go toolchain buildmode default config would be preferable
    but none exist at this time.
  * Call go build with relative path to subdirectory containing
    func main()
  * Add basic %check to execute binary --help

- Initial package version 5.27.0