SHOW STATUS does not anymore change local status variables (except com_show_status). Global status variables are still updated.
SHOW STATUS are not anymore put in slow query log because of no index usage.

Implemntation done by removing orig_sql_command and moving logic of SHOW STATUS to mysql_excute_command()
This simplifies code and allows us to remove some if statements all over the code.

Upgraded uc_update_queries[] to sql_command_flags and added more bitmaps to better categorize commands.
This allowed some overall simplifaction when testing sql_command.

Fixes bugs:
Bug#10210: running SHOW STATUS increments counters it shouldn't
Bug#19764: SHOW commands end up in the slow log as table scans

into  mysql.com:/home/my/mysql-5.1

Added missing copyright
Indentation and prototype fixes
Fixed compiler warning

  Fixed failing test case
field.cc, item_cmpfunc.cc, select.result:
  After merge fix

into serg.mylan:/usr/home/serg/Abk/mysql-5.1

    my_atomic_XX_t -> intXX, no implicit locking anymore
    simplified framework, support for requested cleanups

into  clam.ndb.mysql.com:/space/pekka/ndb/version/my51-bug19285

into  clam.ndb.mysql.com:/space/pekka/ndb/version/my51-bug19285

into moonbone.local:/work/tmp_merge-5.0-opt-mysql

  After merge fix

into moonbone.local:/work/tmp_merge-5.0-opt-mysql

  Fix for bug#16716 for --ps-protocol mode.
item_cmpfunc.cc:
  Fix for a memory allocation/freeing problem in agg_cmp_type() after fix
for bug#16377. Few language corrections.

into serg.mylan:/usr/home/serg/Abk/m51

into serg.mylan:/usr/home/serg/Abk/m51

into  mysql.com:/home/cps/mysql/devel/5.1-csv-remove-mmap

into  c-0409e253.1238-1-64736c10.cust.bredbandsbolaget.se:/home/pappa/mysql-5.1-fix

into  mysql.com:/Users/emurphy/src/mysql/clean/mysql-5.1

into  mysql.com:/home/stewart/Documents/MySQL/5.1/main

into  mysql.com:/home/stewart/Documents/MySQL/5.0/main

into  mysql.com:/home/stewart/Documents/MySQL/5.1/main

fix Field::store(double) being used instead of store(longlong)

NB: overloading functions is evil

into  mysql.com:/home/stewart/Documents/MySQL/5.1/main

into  mysql.com:/home/marty/MySQL/mysql-5.1

into  rurik.mysql.com:/home/igor/mysql-5.0-opt

into  rurik.mysql.com:/home/igor/mysql-5.0-opt

into serg.mylan:/usr/home/serg/Abk/m51

into  mysql.com:/home/cps/mysql/devel/5.1-csv-remove-mmap

into serg.mylan:/usr/home/serg/Abk/m51

into  c-0409e253.1238-1-64736c10.cust.bredbandsbolaget.se:/home/pappa/bug20397