[__git] Fix bug introduced in explorers.

I was using explorers in the explorers >,< which is not supported and would be
awkward.
While at it, symlinked group to owner and unified that code.

cdist/conf/type/__git/explorer/group

@@ -1,15 +0,0 @@
-#!/bin/sh
-
-destination="/$__object_id/.git"
-
-os="$(cat "$__global/explorer/os")"
-
-case $os in
-	*bsd)
-		# Checked on OpenBSD, FreeBSD and NetBSD
-		stat -f "%Sg" "${destination}" 2>/dev/null || exit 0
-	;;
-	*)
-		stat --print "%G" "${destination}" 2>/dev/null || exit 0
-	;;
-esac

cdist/conf/type/__git/explorer/group

@@ -0,0 +1 @@
+owner

cdist/conf/type/__git/explorer/owner

@@ -2,14 +2,28 @@
 
 destination="/$__object_id/.git"
 
-os="$(cat "$__global/explorer/os")"
+action="$(basename "${0}")"
+
+case $action in
+	owner)
+		bsd_fmt="%Su"
+		linux_fmt="%U"
+	;;
+	group)
+		bsd_fmt="%Sg"
+		linux_fmt="%G"
+	;;
+esac
+
+
+os="$(uname | tr '[:upper:]' '[:lower:]')"
 
 case $os in
 	*bsd)
 		# Checked on OpenBSD, FreeBSD and NetBSD
-		stat -f "%Su" "${destination}" 2>/dev/null || exit 0
+		stat -f "${bsd_fmt}" "${destination}" 2>/dev/null || exit 0
 	;;
 	*)
-		stat --print "%U" "${destination}" 2>/dev/null || exit 0
+		stat --print "${linux_fmt}" "${destination}" 2>/dev/null || exit 0
 	;;
 esac