WHERE statement"


sql/ha_federated.cc:
  Changes per Jimw's review. 
  
  notes about some suggestions:
  
  1. Tried to replace my_sprintf with strxmov, but had problems. Couldn't 
     get the test suite to run at all, and could not find any particular
     error. Since this is something that is not critical, I'll leave it
     as is for now.
  2. I would like to use my_error to create all of my error messages, but 
     cannot figure out how to get it to take more than one argument to be
     passed to the error message (I tried this once but had errors, and 
     cannot find an example of how to get it to work despite seeing messages
     with obviously more than one arg
  3. Replaced all string building from literals to defined SQL string pieces
     such as "SELECT ", "FROM " ...
  4. Format fixes, spacing fixes completed
  5. Removed records_in_range records calculation functionality
sql/ha_federated.h:
  Formatting changes, new defines for SQL query string tokens
sql/share/errmsg.txt:
  changed 'SRC' to 'SOURCE' per Jimw's review