Merge polly.(none):/home/kaa/src/maint/mysql-5.0-maint

into  polly.(none):/home/kaa/src/maint/mysql-5.1-maint


mysql-test/r/insert.result:
  Auto merged
mysql-test/t/insert.test:
  Auto merged
mysql-test/t/type_float.test:
  Auto merged
mysql-test/t/variables.test:
  Auto merged
sql/field.cc:
  Auto merged