Add check in 'spawn_impl' that we are not trying to span when the path to the executable is empty or undefined

sql/handler.cc:
  Cast to "byte*" on both sides of equal sign
  Fix spelling error

into  shellback.(none):/home/msvensson/mysql/mysql-5.1-new-maint

into  rolltop.ignatz42.dyndns.org:/mnt/storeage/mysql-5.1-new-maint_21757


tests/mysql_client_test.c:
  Auto merged
client/mysqltest.c:
  manual merge.

tests/mysql_client_test.c:
  Replace fopen with my_fopen and specify O_BINARY. Replace fclose with my_fclose.

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


tests/mysql_client_test.c:
  Auto merged

on up-merging 17926 from 5.0 tree it collides with near-identical fix 1989
in 5.1 tree. backing 17926 out of 5.1 tree.


client/mysql.cc:
  Bug#17926 duplicates Bug#1989 in bug db
  
  back 17926 out of 5.1 tree

into  salvation.intern.azundris.com:/home/tnurnberg/mysql-5.1-maint

into  salvation.intern.azundris.com:/home/tnurnberg/mysql-5.1-maint


sql/ha_innodb.cc:
  null
storage/innobase/btr/btr0btr.c:
  null
storage/innobase/buf/buf0buf.c:
  null
storage/innobase/dict/dict0dict.c:
  null
storage/innobase/fil/fil0fil.c:
  null
storage/innobase/fsp/fsp0fsp.c:
  null
storage/innobase/include/btr0cur.ic:
  null
storage/innobase/include/buf0buf.ic:
  null
storage/innobase/log/log0log.c:
  null
storage/innobase/log/log0recv.c:
  null
storage/innobase/os/os0file.c:
  null
storage/innobase/row/row0mysql.c:
  null
storage/innobase/row/row0sel.c:
  null
storage/innobase/srv/srv0start.c:
  null
storage/innobase/ut/ut0dbg.c:
  null

innodb r719


innobase/btr/btr0btr.c:
  innodb r702
innobase/buf/buf0buf.c:
  innodb r702
innobase/dict/dict0dict.c:
  innodb r702
innobase/fil/fil0fil.c:
  innodb r702
innobase/fsp/fsp0fsp.c:
  innodb r702
innobase/include/btr0cur.ic:
  innodb r719
innobase/include/buf0buf.ic:
  innodb r702
innobase/log/log0log.c:
  innodb r702
innobase/log/log0recv.c:
  innodb r702
innobase/os/os0file.c:
  innodb r702
innobase/row/row0mysql.c:
  innodb r702
innobase/row/row0sel.c:
  innodb r702
innobase/srv/srv0start.c:
  innodb r702
innobase/ut/ut0dbg.c:
  innodb r702
sql/ha_innodb.cc:
  innodb r702

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.1-new-maint

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.1

instance.cc:
  Removed wrongly placed closing brace
item_geofunc.cc:
  needed to pass in a TABLE_SHARE* instead of a TABLE*


server-tools/instance-manager/instance.cc:
  Removed wrongly placed closing brace
sql/item_geofunc.cc:
  needed to pass in a TABLE_SHARE* instead of a TABLE*

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.1-new-maint

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.1

BitKeeper/deleted/.del-readme-renamed:
  Rename: BitKeeper/deleted/.del-readme -> BitKeeper/deleted/.del-readme-renamed

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.1-new-maint


mysql-test/mysql-test-run.pl:
  Auto merged
mysql-test/t/mysql.test:
  Auto merged
mysql-test/t/disabled.def:
  SCCS merged

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.1


BitKeeper/deleted/.del-openssl.m4~41cebd0ba8281769:
  Auto merged
mysql-test/r/func_time.result:
  Auto merged
mysql-test/r/grant.result:
  Auto merged
mysql-test/t/grant.test:
  Auto merged
mysql-test/t/mysql.test:
  Auto merged
mysql-test/t/mysql_client_test.test:
  Auto merged
server-tools/instance-manager/listener.cc:
  Auto merged
server-tools/instance-manager/portability.h:
  Auto merged
sql/item_timefunc.cc:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/slave.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged
tests/mysql_client_test.c:
  Auto merged
client/mysql.cc:
  Manual merge
mysql-test/mysql-test-run.pl:
  Manual merge
mysql-test/t/func_time.test:
  Manual merge

into  bk-internal.mysql.com:/data0/bk/mysql-5.1


client/mysql.cc:
  Auto merged
mysql-test/r/ctype_utf8.result:
  Auto merged
mysql-test/r/gis.result:
  Auto merged
mysql-test/r/grant.result:
  Auto merged
mysql-test/r/im_life_cycle.result:
  Auto merged
mysql-test/r/information_schema_db.result:
  Auto merged
mysql-test/r/type_newdecimal.result:
  Auto merged
mysql-test/r/type_ranges.result:
  Auto merged
mysql-test/r/type_timestamp.result:
  Auto merged
mysql-test/t/ctype_utf8.test:
  Auto merged
mysql-test/t/gis.test:
  Auto merged
mysql-test/t/im_life_cycle.imtest:
  Auto merged
mysql-test/t/type_newdecimal.test:
  Auto merged
mysql-test/t/type_timestamp.test:
  Auto merged
server-tools/instance-manager/messages.cc:
  Auto merged
sql/item_geofunc.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_show.cc:
  Auto merged
sql/sql_view.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
sql/table.h:
  Auto merged
sql/share/errmsg.txt:
  Auto merged
tests/mysql_client_test.c:
  Auto merged

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.0


BitKeeper/deleted/.del-mysql_client.result:
  Auto merged
BitKeeper/deleted/.del-mysql_client.test:
  Auto merged
client/mysql.cc:
  Auto merged
mysql-test/r/func_time.result:
  Auto merged
mysql-test/r/grant.result:
  Auto merged
mysql-test/t/func_time.test:
  Auto merged
mysql-test/t/grant.test:
  Auto merged
sql/item_timefunc.cc:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/slave.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.0


client/mysql.cc:
  Auto merged
tests/mysql_client_test.c:
  Auto merged

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.0


tests/mysql_client_test.c:
  Auto merged

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.0


mysql-test/r/grant.result:
  Auto merged
mysql-test/t/grant.test:
  Auto merged
tests/mysql_client_test.c:
  Auto merged

into  zippy.cornsilk.net:/home/cmiller/work/mysql/merge/mysql-5.0


mysql-test/r/grant.result:
  Auto merged
mysql-test/t/grant.test:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged

into  maint1.mysql.com:/data/localhome/tnurnberg/mysql-5.1-maint-i51

mysql-test/r/federated_transactions.result:
  merge fixes to result file (case sensitivity)
mysql-test/r/warnings.result:
  wrong warning message result

into  rolltop.ignatz42.dyndns.org:/mnt/storeage/mysql-5.0-merge


sql/item_timefunc.cc:
  Auto merged
sql/slave.cc:
  Auto merged
mysql-test/r/func_time.result:
  manual merge
mysql-test/r/mysql_client.result:
  manual merge
mysql-test/t/func_time.test:
  manual merge
mysql-test/t/mysql_client.test:
  manual merge
sql/sql_acl.cc:
  manual merge

into  rolltop.ignatz42.dyndns.org:/mnt/storeage/mysql-5.0-maint_20328


sql/item_timefunc.cc:
  Auto merged
sql/slave.cc:
  Auto merged
BitKeeper/deleted/.del-mysql_client.result:
  manual merge
BitKeeper/deleted/.del-mysql_client.test:
  manual merge
mysql-test/r/func_time.result:
  manual merge
mysql-test/t/func_time.test:
  manual merge
sql/sql_acl.cc:
  manual merge

into  salvation.intern.azundris.com:/home/tnurnberg/work/mysql-5.1-maint-i51

mysql-test/r/mysql_client.result:
  Removed OS dependant output.
mysql-test/t/mysql_client.test:
  Re-directed output to a temporary file because the actual output isn't important and was causing a Windows test failure.