v0.1 specially for gcc 4.7.x compilers
Merge branch 'gcc-4.8' into gcc-4.7 Conflicts: include/leveldb/txn_db.hpp include/leveldb/whiteout_db.hpp
Merge branch 'gcc-4.8' into gcc-4.7 Conflicts: include/leveldb/txn_db.hpp include/leveldb/whiteout_db.hpp