Demonstrate that hash positions can collide
Remove test running since trial handles this
Prevent hash ring positional collisions
Merge pull request #196 from jssjr/hashing-bug

Hash ring collisions in sufficiently large clusters
do not log OSError from os.makedirs, when the dir already exists
check against errno.EEXIST
carbon.conf comment clarification

MAX_CACHE_SIZE unit was not clear.
Merge pull request #206 from ImmobilienScout24/fixed_mkdir_logging

do not log OSError from os.makedirs, when the dir already exists
Merge remote-tracking branch 'graphite/master'