add sha1 , add some comments for MD5
add new line for BUILD
add crc32
add uuid, add include path for benchmark.h
add empty new line for BUILD
implement sstable
port skiplist /random / erena  from leveldb/re2
add lzo algorithm for block compression
Merge branch 'master' into new_sstable
add support for lzo compression
fix comments of chen3feng
add empty line at file end
add empty line at file end
cpplint all
delete chinese comments or change to english, comment out a test case for http_client
Merge pull request #101 from yeshunping/uuid

add uuid, add include path for benchmark.h
Merge pull request #99 from yeshunping/master

add sha1 , add some comments for MD5
Merge pull request #103 from yeshunping/skiplist

Skiplist
Merge pull request #102 from yeshunping/new_sstable

implement sstable
refactoring