lib/libsde.in: enhanced to read the correct $SDESETTINGS even under sudo.

lib/libsde.in

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: lib/libsde.in
-# Copyright (C) 2006 - 2010 The OpenSDE Project
+# Copyright (C) 2006 - 2015 The OpenSDE Project
 #
 # More information can be found in the files COPYING and README.
 #
@@ -23,8 +23,14 @@ sdever=$("$SDEROOT/lib/version.sh")
 
 # default settings
 #
-[ -n "$SDESETTINGS" ] || SDESETTINGS="$HOME/.sde/settings"
-export SDESETTINGS
+if [ -z "$SDESETTINGS" ]; then
+	if [ -n "$SUDO_USER" ]; then
+		SDESETTINGS="$( getent passwd $SUDO_USER | cut -d: -f6)/.sde/settings"
+	else
+		SDESETTINGS="$HOME/.sde/settings"
+	fi
+	export SDESETTINGS
+fi
 
 if [ ! -e "$SDESETTINGS" ]; then
 	mkdir -p "${SDESETTINGS%/*}"