v1.15.0

* IDState cleaned up. Should work on all *NIXes now.
* Can now get IDState of arbitrary PID.
* Shuffled some env stuff around.

consts_nix.go

@@ -0,0 +1,11 @@
+//go:build !(windows || plan9 || wasip1 || js || ios)
+
+package sysutils
+
+const (
+	envSudoCmd   string = "SUDO_COMMAND"
+	envSudoHome  string = "SUDO_HOME"
+	envSudoGrp   string = "SUDO_GID"
+	envSudoUid   string = "SUDO_UID"
+	envSudoUname string = "SUDO_USER"
+)