Add rand_gen_1.erl to create key generators for basho_bench
that can favor/punish LevelDB's SST file merging strategy.
Update leveldb SHA for LRUCache destructor fix
checkpoint-- sharing changes with Dizzy
update for Diz to peek
Updated leveldb version for repair limiting.
raise bits per key from 10 to 16.  reduces false positive rate.
updated to rebar 2.0.0
Merge pull request #37 from basho/mv-calc-bloom-segment

raise bits per key from 10 to 16.  reduces false positive rate.
Checkpoint for Dizzy-- global thread pool accepts jobs; condition vars
Checkpoint for Dizzy-- global thread pool; condition vars
Merge pull request #38 from basho/dip_rebar2.0

updated to rebar 2.0.0
Export iterator/3 so users can iterate over just keys
Merge pull request #39 from basho/wrd-export-iterator-arity-3

Export iterator/3 so users can iterate over just keys
make bloom2 the default bloom filter
Merge pull request #40 from basho/mv-bloom2

make bloom2 the default bloom filter
update leveldb branch to match changes in eleveldb (namely bloom filter 2)
Update port_posix to find FreeBSD definition for endian
Restore Davids patch for 3.2 / older compilers on Solaris and OSX
Update (tests broken); mostly features have plumbing.
Update; should pass tests (not feature-complete yet).