Foundation: extracted the foundation-code of XtreemFS into a new project; the...

Foundation: extracted the foundation-code of XtreemFS into a new project; the foundation package includes the ONCRPC infrastructure, the ReusableBuffer, the checksum-code and some other elemental components of XtreemFS and related projects

git-svn-id: https://xtreemfs.googlecode.com/svn/trunk@1753 f8528748-c2c0-11dd-ba5c-d3b7c2b3b534