leveldb/build/build_config.h may be missing in some cases
leveldb/build/build_config.h may be missing in some cases

my8bird/node-leveldb,maxogden/node-leveldb,mikepb/node-leveldb,my8bird/node-leveldb,mikepb/node-leveldb,maxogden/node-leveldb,my8bird/node-leveldb,maxogden/node-leveldb