Merge magare.gmz:/home/kgeorge/mysql/work/WL3527-5.0-opt

into  magare.gmz:/home/kgeorge/mysql/work/WL3527-after-merge-5.1-opt


mysql-test/r/select.result:
  null-merge
mysql-test/t/select.test:
  null-merge
sql/sql_yacc.yy:
  null-merge