Merge pull request #31 from SaveTheRbtz/master

Datasort: implemented merge of small blobs on defrag
v0.21.6
blob: do not commit to ram until eblob_writev_raw is finished.

Closes: ELL-152
Merge pull request #32 from SaveTheRbtz/ELL-152

blob: do not commit to ram until eblob_writev_raw is finished.
v0.21.7