godoc to turn URLs in inline docs into anchor tags

[adg]

It would be nice that if godoc encounters a URL in the documentation, it turns 
it into an HTML link.

For example, in the documentation for goinstall:
  http://golang.org/cmd/goinstall/
there is a reference to http://godashboard.appspot.com/packages, but it is 
not displayed as a link.

[griesemer]

Comment 1:

Owner changed to g...@golang.org.

[griesemer]

Comment 2:

Status changed to Started.

[griesemer]

Comment 3:

This issue was closed by revision 90f7209.

Status changed to Fixed.