HBASE-10011 Fix some findbugs in the client

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1545210 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10022 Fix the HE_EQUALS_USE_HASHCODE warning under hbase-hadoop1-compat (Liang Xie)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1545250 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10023 Fix/Suppress all the 10 findbug warnings under hbase-common (Liang Xie)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1545257 13f79535-47bb-0310-9956-ffa450edef68