Merge pull request #79 from shaitan/master

Added logging eblob_write_commit_footer with csum-time
blob: reserve 2 blob sizes - this is needed for sorting - split+merge
Merge branch 'master' of github.com:reverbrain/eblob
stat: detailed monitoring in write_commit_nolock() added
Merge branch 'master' of https://github.com/reverbrain/eblob

Conflicts:
	library/blob.c
warning fixed, ssize_t replaced with int
Merge pull request #80 from IIoTeP9HuY/master

Detailed monitoring in write_commit_nolock added
v0.21.40
log: made eblob_dump_id_len() and friends thread-safe by using per-thread allocated temporal buffers
iterate: updated iterators - exported new iterator similar to what is present in C code, get rid of old iterator class
example: get rid of unused regex iterator, it used old iterator code, which did not take into account ext headers for example
example/embed: added boost::program_options deps, added old elliptics embedded structure checks
eblob: added plain_write() method, which is a wrapper on top of eblob_plain_write()