OAK-2085 - Move CacheStats humanReadableByteCount to Oak Commons IOUtils

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1623766 13f79535-47bb-0310-9956-ffa450edef68
OAK-2080 - BlobSize in OakDirectory differs between trunk and 1.0 branch

Reverting the size to 32 KB to match the size in 1.0 branch

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1623767 13f79535-47bb-0310-9956-ffa450edef68
OAK-2079 - Refactor BlobStore creation logic in a BlobStoreFixture

-- Use tmp directory in case basedir is not explicitly defined
-- FDS should only be used if none is explicitly defined

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1623768 13f79535-47bb-0310-9956-ffa450edef68
OAK-2082 - Analyze repository growth with Lucene index on SegmentMk

Added a RepositoryGrowthTest to measure repository size

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1623769 13f79535-47bb-0310-9956-ffa450edef68