client:

- Re-enabled writing of striped files (accidentally enabled writing of all striped files while we only wanted to disable writing of striped + replicated files since this is not possible).
- Replaced tabs with spaces.

git-svn-id: https://xtreemfs.googlecode.com/svn/trunk@3236 f8528748-c2c0-11dd-ba5c-d3b7c2b3b534