"IDENTIFIER TOO LONG" IF TABLE NAME > 64 

BACKGROUND:
When table/database name is more then 64 character, 
"Incorrect table name" error is thrown. But expected error 
is "Identifier too long".

FIX:
This bug has been fixed by reporting ER_TOO_LONG_IDENT error 
when table/database/function/procedure name etc is greater 
than 64 characters. 
Also please note the behaviour changes in check_table_name() 
and check_and_convert_db_name() functions in table.cc file. 
Their return type has been changed accordingly to report 
the appropriate error and now they return enum instead of 
bool. Other files have also been appropriately modified at 
relevant places to report the appropriate error in each 
case.
Also a testcase has been written in create.test and 
corresponding result files have been updated.