Tests cleanup (put drop database first in tests)


client/mysql.cc:
  Cleanup of code in last pull
include/config-win.h:
  Remove HAVE_CHSIZE on windows as it's not 64 bit clean
include/my_global.h:
  Portability fix
mysql-test/r/drop.result:
  Clean up results
mysql-test/r/flush.result:
  Clean up results
mysql-test/r/grant_cache.result:
  Clean up results
mysql-test/r/innodb.result:
  Clean up results
mysql-test/r/insert_select.result:
  Clean up results
mysql-test/r/merge.result:
  Clean up results
mysql-test/r/query_cache.result:
  Clean up results
mysql-test/t/drop.test:
  Clean up tests
mysql-test/t/flush.test:
  Clean up tests
mysql-test/t/grant_cache.test:
  Clean up tests
mysql-test/t/innodb.test:
  Clean up tests
mysql-test/t/insert_select.test:
  Added more tests
mysql-test/t/merge.test:
  Test of bug 515
mysql-test/t/query_cache.test:
  Clean up tests
mysql-test/t/symlink.test:
  Clean up tests
sql/mysql_priv.h:
  Cleaner implementation if INSERT ... SELECT with same tables
sql/sql_lex.h:
  Cleaner implementation if INSERT ... SELECT with same tables
sql/sql_list.h:
  Indentation cleanup
sql/sql_parse.cc:
  Cleaner implementation if INSERT ... SELECT with same tables
sql/sql_yacc.yy:
  Cleaner implementation if INSERT ... SELECT with same tables