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.
# exists.cif
#
# 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
#
==name exists
==short-description
Tests if a particular file or directory exists.
==long-description
Returns KErrNone if it does, or either KErrNotFound or KErrPathNotFound otherwise. Intended to be used in conjunction with fshell's C<&&> and C<||> operators.
==argument filename file_name
The name of the file or directory of interest.
==copyright
Copyright (c) 2006-2010 Accenture. All rights reserved.