Added finer scope control for default clauses of local variable
  declarations.

  Make IM ports change with MTR_BUILD_THREAD

into  ua141d10.elisa.omakaista.fi:/home/my/bk/mysql-5.0-tmp

into  ua141d10.elisa.omakaista.fi:/home/my/bk/mysql-5.0-tmp

into deer.(none):/home/hf/work/mysql-4.1.12839

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0

into mysql.com:/home/psergey/mysql-5.0-oct25-test

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into  krsna.patg.net:/home/patg/mysql-build/mysql-4.1

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into mysql.com:/home/psergey/mysql-5.0-oct25-test

into moonbone.local:/work/14138-bug-5.0-mysql

  After merge fix

into  frost.snake.net:/Users/paul/bk/mysql-5.0

into mysql.com:/home/psergey/mysql-5.0-oct25-test

into mysql.com:/home/psergey/mysql-4.1-bug14139

into  mysql.com:/home/jimw/my/mysql-5.0-clean

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0

into  a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-4.1

into  mysql.com:/home/alexi/dev/mysql-4.1-10511

 ON UPDATE CASCADE

into  mysql.com:/usr/home/pem/bug14256/mysql-5.0

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0

into  sanja.is.com.ua:/home/bell/mysql/bk/work-owner7-5.0

Procedure analyse() redefines select's fields_list. setup_copy_fields() assumes
that fields_list is a part of all_fields_list. Because select have only 
3 columns and analyse() redefines it to have 10 columns, int overrun in
setup_copy_fields() occurs and server goes to almost infinite loop.

Because fields_list used not only to send data ad fields types, it's wrong 
to allow procedure redefine it. This patch separates select's fileds_list 
and procedure's one. Now if procedure is present, copy of fields_list is 
created in procedure_fields_list and it is used for sending data and fields.

into  a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-4.1