Add: FileReader and FileWriter interfaces  PCD, PLY,... file reader, writer must inherit from these interfaces and  implement theirs virtual methodes.
Add: FileReader and FileWriter interfaces 
PCD, PLY,... file reader, writer must inherit from these interfaces and 
implement theirs virtual methodes.



git-svn-id: 1af002208e930b4d920e7c2b948d1e98a012c795@1274 a9d63959-f2ad-4865-b262-bf0e56cfafb6

psoetens/pcl-svn,psoetens/pcl-svn,psoetens/pcl-svn,psoetens/pcl-svn,psoetens/pcl-svn