sbt/main
Eugene Yokota 033601c393 addPluginSbtFile command fixes
Ref #4211
Fixes #4395
Fixes #4600

This is a reimplementation of `--addPluginSbtFile`. #4211 implemented the command to load extra `*.sbt` files as part of the global plugin subproject. That had the unwanted side effects of not working when `.sbt/1.0/plugins` directory does not exist. This changes the strategy to load the `*.sbt` files as part of the meta build.

```
$ sbt -Dsbt.global.base=/tmp/hello/global --addPluginSbtFile=/tmp/plugins/plugin.sbt
[info] Loading settings for project hello-build from plugin.sbt ...
[info] Loading project definition from /private/tmp/hello/project
sbt:hello> plugins
In file:/private/tmp/hello/
	sbt.plugins.IvyPlugin: enabled in root
	sbt.plugins.JvmPlugin: enabled in root
	sbt.plugins.CorePlugin: enabled in root
	sbt.ScriptedPlugin
	sbt.plugins.SbtPlugin
	sbt.plugins.SemanticdbPlugin: enabled in root
	sbt.plugins.JUnitXmlReportPlugin: enabled in root
	sbt.plugins.Giter8TemplatePlugin: enabled in root
	sbtvimquit.VimquitPlugin: enabled in root
```
2019-11-10 20:03:09 -05:00
..
src addPluginSbtFile command fixes 2019-11-10 20:03:09 -05:00
NOTICE Add, configure & enforce file headers 2017-10-05 09:03:40 +01:00