More fixup around SCR.  Add sample config.  Remove the whole section on checksum verify.  It is what we have on by default now so don't call it out; only confuses

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1591110 13f79535-47bb-0310-9956-ffa450edef68
More fixup on the checksum verify description

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1591126 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10925 Do not OOME, throw RowTooBigException instead (Mikhail Antonov)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1591154 13f79535-47bb-0310-9956-ffa450edef68