Fixes https://github.com/sbt/sbt/issues/5206
Problem
--------
Coursier uses directories-jvm to determine its default cache directory.
Currently directories-jvm shells out to Powershell to call the [Known Folders API](https://docs.microsoft.com/en-us/windows/win32/shell/knownfolderid), which doesn't work in various environments, and instead of an error, it apparently returns `null/Coursier/cache` as the directory name.
Solution
--------
With due respect to the heroic effort directories-jvm is making to comply to the directory standards on all operating systems, including that of Microsoft, I don't think the majority of the sbt users care exactly where that directory is as long as it is well-documented, and calculated in a fast and predictable way.
Instead of shelling out to Powershell, or using JNI, to hit the Known Folders API, I propose we first look at `LOCALAPPDATA` environment variable. When it is not found, it will fall back to `$HOME/AppData/Local`. Per discussion in https://github.com/dirs-dev/directories-jvm/issues/43, `LOCALAPPDATA` environment variable may NOT represent the one-true Known Folders API value of the AppData directory in case the user happened to have set the `LOCALAPPDATA` environmental variable. For the purpose of picking a directory for Coursier cache, I don't find that to be a problem because it will be faster, more reliable, and predictable.
The processing log is sent when a command issued by a request is being
processed, if the request has not yet been responded. In particular,
the processing log of sbtReportResult is filtered out if the client has
already received a response.
The processing log severity is the lowest so that it can be ignored by
the BSP client.
Fixes https://github.com/sbt/sbt/issues/6372
sbt 1.4.x includes both JLine 2 and JLine 3, and our fork of JLine 2 uses JAnsi matching with JLine 3.
I need to bump JLine 2 together, which uses the same JAnsi version as
JLine 3.
The inputFileChanges, inputFiles and outputFiles macros all used the now
deprecated `in` syntax, which causes warnings for builds that use these
apis. SlashSyntax doesn't naively work in these macros so it was easier
to just reimplement the logic in this file.
Fixes#6330