Added svn:ignore for hbase-thrift and hbase-shell

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1526356 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9660 Release source tarball should contain ./dev-support contents


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1526358 13f79535-47bb-0310-9956-ffa450edef68