Add total_leveldb_mem option.
disable cache_size for safety sake ... for now at least.
add is_internal_db option flag
not finding leaks via valgrind.  going to raise threshhold on cacheleak test
dumb coding on a machine that lacks erlang ... moving to another box.  This merges Engels total_memory code and adds total_leveldb_mem_percent
fix syntax error
force schema to really add
change all enif_get_uint64() to enif_get_ulong() since uint64() does not compile with uint64_t on all platforms.
making multibackend setting of riak an advanced setting ... so stuff works
correct syntax of atom names for two new options
address edge case where only internal databases exist and no memory sizing in configs
Address questions from code review.
change build_deps to point to mv-flexcache check-in of leveldb
Merge pull request #73 from basho/mv-flexcache

Mv flexcache