Basic Spin and SpinLock classes in cache.cc.  Tested on OSX where they revert to pthread_mutex_t.
missed two files in last commit.
Correct the define used to select spinlock feature.  Add travis file that seems lost.
More refinement to OSX feature test for spinlock
correct init value of pthread_spin_init
correcting error in perf counter calculation ... not spin lock related, but quick
Basic Spin and SpinLock classes in cache.cc.  Tested on OSX where they revert to pthread_mutex_t.
missed two files in last commit.
clear .travis.yml conflict
More refinement to OSX feature test for spinlock
correct init value of pthread_spin_init
correcting error in perf counter calculation ... not spin lock related, but quick
merge .travis.yml again
Merge pull request #92 from basho/mv-spin-locks

Mv spin locks