ALTER TABLE temporarily creates a new table with a .frm
file and optionally other files. For fast ALTER TABLE
only the .frm file is created. If the operation succeeds,
The temporary files are renamed to their final target.

In case of an error, the temporary file was forgotten to
remove.

Manually tested. The test requires to look at files,
which I think cannot be done portably with the test suite.
The test file is attached to the bug report.

into  mysql.com:/usr/home/bar/mysql-5.1-new

"upgrade" failed on windows, because of lower_case_table_name.
This fix changes letters to lower case, not to depend on OS.

Note, this change does not affect coverage of 
Bug N 17142 "Crash if create with encoded name",
which the test war originally written for.

into  mysql.com:/home/mysql_src/mysql-5.1-new

This is faster under gdb/valgrind (this should speed up work of people who have to run
a simple test 50 times to do debugging). Running without --big, which is the default, InnoDB tests
take at most 18MB so 128 was overkill. Running with --big, InnoDB tests take 450MB so 128
was not enough anyway.

into  mysql.com:/usr/home/bar/mysql-5.1-new.b18285

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1

 - Part 1, better handling of subprocess and stdout to be done

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

into  c-4908e253.1238-1-64736c10.cust.bredbandsbolaget.se:/home/pappa/bug18750

- Terminate loop not only when the limit is met, but alse when there is no more stmts  

 - Add more printouts it depending on verbose level
 - New common function 'run_query' to be used when executing a query

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

into  mysql.com:/usr/home/bar/mysql-5.1-new.b18285

into  linux.site:/home/marty/MySQL/mysql-5.1-new

into  c-4908e253.1238-1-64736c10.cust.bredbandsbolaget.se:/home/pappa/bug18750

into  mysql.com:/home/alexi/bugs/mysql-5.1-13683

Don't use the MYSQL* returned from mysql_real_connect to overwrite the already initalised mysql variable

into  c-4908e253.1238-1-64736c10.cust.bredbandsbolaget.se:/home/pappa/bug18750

into  linux.site:/home/marty/MySQL/mysql-5.1-new

into  mysql.com:/usr/home/bar/mysql-5.1-new.b18285

Remove the my_seek calls as we have just opened the file for append with O_APPEND and the file pointer should be at end of the file already.

into  shellback.:C:/mysql/my51-bug17368

Open and seek to end of data_file after rename 
Fix comment for when file does not need repair.
Set share->mapped_file to NULL always when it's been unmapped 
Add test to see that file can be used after repair

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1

into  mysql.com:/usr/home/bar/mysql-5.1-new

ExtractValue didn't understand tag and attribute names
consisting of "tricky" national letters (e.g. latin accenter letters).
It happened because XPath lex parser recognized only basic
latin letter a..z ad a part of an identifier.

Fixed to recognize all letters by means of new "full ctype" which
was added recently.

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1

Add surrounding braces, move invalidate dictionary_cace to after declaration of variable "table_list"

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1