More build fixes.
Changed the documentation builder to automatically prepend %EPOCROOT% (converted to a path relative form) to pre-processor include path options that start with 'epoc32'. Prevously $(EPOCROOT) was prepended in the makefile, which broke the documentation build because the pre-processor will only accecpt relative path include options.
#!fshell
# addenv.script
#
# Copyright (c) 2010 Accenture. All rights reserved.
# This component and the accompanying materials are made available
# under the terms of the "Eclipse Public License v1.0"
# which accompanies this distribution, and is available
# at the URL "http://www.eclipse.org/legal/epl-v10.html".
#
# Initial Contributors:
# Accenture - Initial contribution
#
# Syntax: source addenv.script <variablename> <value>
# Note: Have to use source to call this, otherwise the env changes will be lost!
var ARG_COUNT != 2 && error -6 "Syntax: source addenv.script <variablename> <value>"
var $1 add $2