K 10
svn:author
V 4
dmgk
K 8
svn:date
V 27
2020-02-20T12:15:37.202318Z
K 7
svn:log
V 439
Mk/Uses/go.mk: Add GO_TESTTARGET and provide default do-test

Add GO_TESTTARGET defaulting to `./...` (the current package and all
subpackages) and create do-test target unless already provided by port's
Makefile.

Also, while here

- remove GO_WRKDIR_SRC - it is not used by any port anymore
- sync GO_PKGNAME and GO_TARGET descriptions with Porter's Handbook

Reviewed by:	tobik
Differential Revision:	https://reviews.freebsd.org/D22412

END