[MT_Core] Updates to XDF. Replaced local functions with functions from filesupport, no longer attemps to open a nonexistant file for read-only access, files are stored in xml with relative paths.
[MT_Core] Updates to XDF. Replaced local functions with functions from filesupport, no longer attemps to open a nonexistant file for read-only access, files are stored in xml with relative paths.

leonard-lab/MADTraC,leonard-lab/MADTraC,leonard-lab/MADTraC,leonard-lab/MADTraC,leonard-lab/MADTraC,leonard-lab/MADTraC,leonard-lab/MADTraC