grant warnings on embedded server.

The cause of the crash is an assertion failure that we do not emit 
an error message (grant not found) and then return "ok".  The 
assertion is valid, and we were ignoring the buggy behavior prior 
to the "Diagnostics" result-verification.

Use an error handler to mutate innocuous missing-grant errors, when 
removing routines, into warnings.

into  hh-nb.hungers:/work/merge/mysql-5.1-build

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-build

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-build

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.0-build

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-build

into  pilot.mysql.com:/data/msvensson/mysql/bug25988/my51-bug25988

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.0-build

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-build

into  hh-nb.hungers:/work/merge/mysql-5.1-bug34190

into  trift2.:/MySQL/M51/push-5.1

into  trift2.:/MySQL/M50/push-5.0

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-build

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-build

into  ramayana.hindu.god:/home/tsmith/m/bk/build/51

Also use the opportunity to fix a bad merge (remove
duplicate code in mysql-test-run.pl).

into  ramayana.hindu.god:/home/tsmith/m/bk/build/51

into  ramayana.hindu.god:/home/tsmith/m/bk/build/50

into  ramayana.hindu.god:/home/tsmith/m/bk/build/51

into  solace.(none):/home/mtaylor/src/mysql-5.1-build

into  ramayana.hindu.god:/home/tsmith/m/bk/build/51

into  ramayana.hindu.god:/home/tsmith/m/bk/build/51

into  ramayana.hindu.god:/home/tsmith/m/bk/build/50

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.0-build

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-build

cause sporadic, but benign, errors.

into  pilot.mysql.com:/data/msvensson/mysql/bug31239/my51-bug31239

into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge

into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge