fail later for version info and initalize pointers to null
Merge pull request #19 from pantheon-systems/fix_early_exit_segfaults

fail later for version info and initalize pointers to null
Use tcmalloc.
Use jemalloc.
Drop LevelDB LRU to 5MB.
Try disabling the LRU cache.
Properly drop LRU cache.
Add SIGUSR2 handler for statistics output.
Add statistics.
Merge branch 'master' of github.com:pantheon-systems/fusedav into lockandmodifyfix

Conflicts:
	src/fusedav.c