all files.

This makes serializing file changes easier, as all removed files will
have explicit deletion entries.

The benchmarks cannot accurately identify its benefit, and it has a
tangible drawback in that it locks up the daemon if it has many
blocking calls.

Fix link error with gcc4.6

'make cstatfs' resulting below link error.
  statfs.o: In function `main':
  statfs.cc:(.text.startup+0x168): undefined reference to `fuse_main_real'
  collect2: ld returned 1 exit status

(g++ 4.6.1 Ubuntu Oneiric)

Linker flag '--as-needed' is used by default on Ubuntu Oneiric. This
patch fixes the link error by change objects and libraries order.
Signed-off-by: Haitao Li <lihaitao@gmail.com>

Now, nodeId and lookupCount are exclusively used for kernel
communication, and a nodeId may change during the lifetime of the
Inode if the same node is forgotten and looked up again.

treeLock.