This fixes the bug where custom Makefile variables are not correctly
defined if the project is not in a directory which name is the name of
the project.
Signed-off-by: Nicolas Dandrimont <Nicolas.Dandrimont@crans.org>
git-svn-id: https://src.develer.com/svnoss/bertos/trunk@4854 38d2e660-2303-0410-9eaa-f027e97ec537