+ vsfs_symlink
Merge branch 'master' into fuse_symlink
* encalpsue symlink into storage_manager
* create a record for the symlink in vsfs namespace
* modified test_symlink in fuse_test
* removed the symlink and ioctl fuse test.
* fixed a bug in getattr to recognize link
* modification according to review.
* modified mode
Merge pull request #74 from vsfs/fuse_symlink

Fuse symlink