prototype of 2-way inode tracker
rewrite inode tracker as inode maps
fix reference count decreasing
fix reference count increase
use live inode only for non-regular files
fix inodes in listing
disable page cache
fix compile bug
Merge branch 'master' into static-libfuse

Conflicts:
	cvmfs/cvmfs.cc
turn off symbol versioning in libfuse which leads to linker errors for cvmfs shared library
remove libfuse from rpm,deb dependency list