fixing "error to include non-exiting file" on Mac
Updated demo_drive to enable data persistence on remount and added new
library target.
Merge pull request #10 from BSMaidSafe/next

Updated demo_drive to enable data persistence on remount and added new
Tidies up preprocessor definition's checking.
Merge pull request #11 from BSMaidSafe/next

Tidies up preprocessor definition's checking.
Trivial bugfix.
Updated
disabling metadata cache
Merge branch 'next'