Merge pull request #3 from lundman/master

Remove verbose warning
Do not add negative cache entries in dnlc_update() wrapper.
Merge remote branch 'upstream/master'
Also remove positive cache entries, as we are experiencing false
positives.
Bring back cache calls
aaannd disable cache again
ZFS added taskq type TASKQ_THREADS_CPU_PCT and SPL did not. We created
literal 75 threads, instead of num_cpus * 75%.
This decreases the "import" of a pool creating ~250 thread, to ~90.
Add sysctl spl.num_threads
Update project homepage URL
Merge pull request #4 from prat0088/patch-1

Update project homepage URL
Readme update.
Lowering back-ticks.
Readme update
Merge remote branch 'upstream/master'
Safety checks for polling requests lowered for increased IO.
Merge branch 'master' of github.com:openzfsonosx/spl
Initial slice allocator implementation
added new files for allocator
remove unused initalisation code.
- Small code cleanups
- Improve space efficiency
- Add time based garbage collection for returning memory to underlying OS
- Correct fault where memory was not retained once a certain working set
  size was exceeded.