This cl updates go/internal/gcimporter the to anticiapte missing
targets and .a files the same way CL 442303 updates the two other
versions of gcimporter to do the same. It also adds a couple of
helpers to create importcfg files for the compiler and list the
locations of cached stdlib .a files in internal/goroot and
internal/testenv, the analogues of their import paths in the go
distribution.
Change-Id: Ie207882c13df0e886a51d31e7957a1e508331f10
Reviewed-on: https://go-review.googlesource.com/c/tools/+/445455
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Michael Matloob <matloob@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Michael Matloob