Making Hugo available on as many architectures as possible

Build problems on armel and arm64 architectures


=== RUN   TestTplGoFuzzReports
--- FAIL: TestTplGoFuzzReports (0.05s)
  template_test.go:141: #2 Test 1 should have errored
FAIL 0.310s


# TODO: Add "hugo-docs" package in the future
obj-aarch64-linux-gnu/bin/hugo -s docs -d public/html --uglyURLs
2016/01/12 00:33:24 function not implemented
debian/rules:9: recipe for target 'override_dh_auto_build' failed


Use gccgo to make Hugo available on even more architectures

Using go-md2man as an example:

Pull request to dh-make-golang:

Appendix: 彎路, trying to test on porterbox without using schroot