The usage of a native 'go' command has been replaced with a make &
environment variable $GOCC. This enables building with multiple go
versions on a single machine as documented:
* https://golang.org/doc/install#extra_versions
This enables the usage of:
```bash
$ make install
$ # OR
$ GOCC=go1.12.3 make install
$ # OR
$ GOCC=go1.12.4 make install
```
And the build and test tools now pick up on this change
On branch go-version-check
Changes to be committed:
modified: Rules.mk
modified: bin/check_go_version
modified: bin/dist_get
modified: bin/maketarball.sh
modified: coverage/Rules.mk
modified: mk/golang.mk
modified: mk/tarball.mk
License: MIT
Signed-off-by: Chris Buesser <christopher.buesser@gmail.com>
