What we need to be able to set in myisamchk is
actually a collation, not a character set. This
fix just changes to display the proper error message. 


include/mysys_err.h:
  New mysys error message "unknown collation".
mysys/charset.c:
  Display more proper error when a collation is not found.
mysys/errors.c:
  New "unknown collation" error.

independently from the expression it is initialized from.
In other words, this change treats a user variable like
a table with one column and one record. Discussed with 
PeterG, Serg and Lars. This change also simplifies replication
allowing not to replicate variables' coercibility.


mysql-test/r/user_var.result:
  Test changes accordintly
mysql-test/t/user_var.test:
  Test changes accordintly

  Treat unknown characters straight in a query as syntax error, rather skipping it as a space character.


mysys/charset.c:
  Treat unknown characters straight in a query as syntax error, rather skipping it as a space character.
mysql-test/t/ctype_latin1.test:
  Treat unknown characters straight in a query as syntax error, rather skipping it as a space character.
mysql-test/r/ctype_latin1.result:
  Treat unknown characters straight in a query as syntax error, rather skipping it as a space character.

  optimize test_if_minus() when not UCS2 support is compiled.


sql/field.cc:
  optimize test_if_minus() when not UCS2 support is compiled.

  Fix compiler complaint.


sql/sql_parse.cc:
  Fix compiler complaint.

  Bugs: #8385: utf8_general_ci treats cyrillic letters I and SHORT I as the same


strings/ctype-utf8.c:
  Bugs: #8385: utf8_general_ci treats cyrillic letters I and SHORT I as the same
mysql-test/t/ctype_utf8.test:
  Bugs: #8385: utf8_general_ci treats cyrillic letters I and SHORT I as the same
mysql-test/r/ctype_utf8.result:
  Bugs: #8385: utf8_general_ci treats cyrillic letters I and SHORT I as the same

  bug#7571:
  Server & Client characterset are shown under different decriptions
  Switch them into the correct order.


client/mysql.cc:
  bug#7571:
  Server & Client characterset are shown under different decriptions
  Switch them into the correct order.

into mysql.com:/home/mysqldev/tulin/mysql-4.1


scripts/make_binary_distribution.sh:
  Auto merged

sql/sql_update.cc:
  Auto merged
sql/sql_yacc.yy:
  Merged from 4.0

into mysql.com:/home/bk/b7879-mysql-4.0


sql/sql_update.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged

Backporting Monty's fix for 5.0 into 4.1.

into deer.(none):/home/hf/work/mysql-4.1.clean

Some variable wasn't moved to the initial state during mysql_server_end


myisam/ft_stopwords.c:
  resetting ft_stopword_file
sql/mysqld.cc:
  free_charsets() call added

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

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

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


scripts/mysql_create_system_tables.sh:
  Auto merged

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


sql/sql_acl.cc:
  Auto merged

tests/mysql_client_test.c:
  SCCS merged

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


sql/sql_base.cc:
  Auto merged

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

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

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


BitKeeper/triggers/post-commit:
  Auto merged

into mysql.com:/home/jimw/my/mysql-4.0-clean

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

into pcgem.rdg.cyberkinetica.com:/var/db/bk/work-acurtis/bug8147.1


sql/sql_parse.cc:
  Auto merged

into mysql.com:/home/svoj/devel/mysql/mysql-4.1

Fixed that negative arguments to certain integer options wrap around.


mysql-test/r/variables.result:
  Added a test case for bug#6958.
mysql-test/t/variables.test:
  Added a test case for bug#6958.
sql/set_var.cc:
  sys_var_long_ptr::check function was added.
sql/set_var.h:
  Use sys_var_long_ptr::check function for sys_var_long_ptr class.

support-files/mysql.spec.sh:
  - fixed a changelog entry (wrong author)

into mysql.com:/space/my/mysql-4.1

  Perl script to create HP depot packages.

into rurik.mysql.com:/home/igor/mysql-4.1

  Revised the fix for bug #7098.
  Corrected the method Item_string::new_item.
sql_select.cc:
  Revised the fix for bug #7098.
  Aborted the previous modifications.


sql/sql_select.cc:
  Revised the fix for bug #7098.
  Aborted the previous modifications.
sql/item.h:
  Revised the fix for bug #7098.
  Corrected the method Item_string::new_item.

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1


mysql-test/mysql-test-run.pl:
  Auto merged

into rurik.mysql.com:/home/igor/dev/mysql-4.1-0

  Added a test case for bug #7098.
sql_select.cc:
  Fixed bug #7098.
  When a string field was substituted for an equal constant
  the collation of the constant was changed by mistake for 
  the binary collation.


sql/sql_select.cc:
  Fixed bug #7098.
  When a string field was substituted for an equal constant
  the collation of the constant was changed by mistake for 
  the binary collation.
mysql-test/t/select.test:
  Added a test case for bug #7098.
mysql-test/r/select.result:
  Added a test case for bug #7098.