Instead of (re)defining logic to build packages with Go in
`post-extract' and `do-build' directly use lang/go/go-package.mk
and adjust `do-install' target accordingly.
Discussed with <fhajny>.
Unfortunately pup doesn't have any man pages. However, README.md is
a good introduction to it so install it in `share/doc/pup' so that binary
package users can easily access it.
Bump PKGREVISION.
Discussed with <fhajny>
pup is a command line tool for processing HTML. It reads from
stdin, prints to stdout, and allows the user to filter parts of
the page using CSS selectors.
