go/internal/gccgoimporter: port recent changes from stdlib version

This CL brings over the following changes from the std lib:

	https://golang.org/cl/137857
	https://golang.org/cl/137935
	https://golang.org/cl/137975

There are no further code changes except that the importer test
cases are split between importer_test.go and importer19_test.go
to support multiple Go versions.

Updates golang/go#27856.

Change-Id: I625def738c22c24c6659af37c3871038fdd8b981
Reviewed-on: https://go-review.googlesource.com/137995
Reviewed-by: Ian Lance Taylor <iant@golang.org>
8 files changed
tree: 4f91db70d192490bf6cbab82383ea99a60e604b2
  1. benchmark/
  2. blog/
  3. cmd/
  4. container/
  5. cover/
  6. go/
  7. godoc/
  8. imports/
  9. internal/
  10. playground/
  11. present/
  12. refactor/
  13. third_party/
  14. .gitattributes
  15. .gitignore
  16. AUTHORS
  17. codereview.cfg
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. LICENSE
  21. PATENTS
  22. README.md
README.md

Go Tools

This subrepository holds the source for various packages and tools that support the Go programming language.

Some of the tools, godoc and vet for example, are included in binary Go distributions.

Others, including the Go guru and the test coverage tool, can be fetched with go get.

Packages include a type-checker for Go and an implementation of the Static Single Assignment form (SSA) representation for Go programs.

Download/Install

The easiest way to install is to run go get -u golang.org/x/tools/.... You can also manually git clone the repository to $GOPATH/src/golang.org/x/tools.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html.

The main issue tracker for the tools repository is located at https://github.com/golang/go/issues. Prefix your issue with “x/tools/(your subdir):” in the subject line, so it is easy to find.