WL# 2094 Federated Storage Handler

Patch #2, all coding style changes per Kostja's review 
(as requested to keep style changes separate from functionality changes),
as well as changes to the test suit to no longer use hard-coded port 
values in foreign table creation statement


mysql-test/r/federated.result:
  Now using SLAVE_PORT as opposed to hard-coded port value
mysql-test/t/federated.test:
  - changed test to use SLAVE_MYPORT
  - made all standard SQL uppercase
  - made test 80 cols, except blob inserts of text
sql/ha_federated.cc:
  - made sure all comments and style changes were according to Kostja's 
  review 
  - combined parse_url error handling into a 'error:' block, took out 
  triple exclamation points.
  - clarified commented documentation
  - got rid of all trailing spaces