Give a useful default value to processing location in build.xml.
Give a useful default value to processing location in build.xml.

tildebyte/processing.py,tildebyte/processing.py,mashrin/processing.py,mashrin/processing.py,tildebyte/processing.py,jdf/processing.py,mashrin/processing.py,Luxapodular/processing.py,jdf/processing.py,jdf/processing.py,Luxapodular/processing.py,Luxapodular/processing.py