flags: added EBLOB_AUTO_INDEXSORT: if this flag is set - eblob will force sorting blob's index after the blob is closed
json: added stat_file_time and stat_file_error to json statistics. Added string representation for timestamps in json.
indexsort: changed level of log at sanity check while applying binlog. At startup added check that index is unsorted before sort it.
Merge pull request #96 from shaitan/master

EBLOB_AUTO_INDEXSORT eblob flag