This changeset/patch is on top of changesets 1.1814 and 1.1846 
(for bugs 8033 and 8065) and now fixes bug 8535.

These changes have been built and tested successfully on build.mysql.com

handler.cc:
  Added hooks for federated_db_init() and federated_db_end(), 
  as done with ha_archive_db does, per suggestion by Ingo in
  code review of patch 1.1846.
ha_federated.h:
  declaration of federated_db_init() and federated_db_end()
ha_federated.cc:
  - Fixed some indentation problems from indent-ex (mainly to do with
    cases where "variablename += value"
  - Added federated_db_init() and federated_db_end(), as done with
    archive, which also handler more elegantly one of the memory leaks
    from bug 8033 where the federated_mutex was not freed
  - Removed extrenous debug messages in parse_url()
  - Fixed bug 8535, caused by NULL being quoted in write_row. This used to
    work (incorrectly) but a recent change was made in the server that 
    exposed this

into krsna.patg.net:/home/patg/mysql-5.0

into mysql.com:/Users/kent/mysql/bk/mysql-5.0-compile

  Make SQL more readable, substitute hostname at runtime
mysql-test-run.pl:
  Run init scripts with /bin/sh, ignore return code

into mysql.com:/Users/kent/mysql/bk/mysql-5.0-compile

into mysql.com:/Users/kent/mysql/bk/mysql-4.1-perl

into mysql.com:/Users/kent/mysql/bk/mysql-5.0-compile

'ps_1general' and 'fulltext_cache' test cases.

into mysql.com:/home/dellis/bkl/bug-4.1

into mysql.com:/home/cps/mysql/trees/mysql-5.0

Recommited, as I made a typo in the previous patch myself =)

into mysql.com:/Users/kent/mysql/bk/mysql-4.1-perl

into mysql.com:/home/dellis/bkl/bug-5.0

into mysql.com:/home/mysql_src/mysql-5.0-xa

into mysql.com:/home/mysql_src/mysql-5.0-xa

into serg.mylan:/usr/home/serg/Abk/mysql-5.0

into pcgem.rdg.cyberkinetica.com:/var/db/bk/work-acurtis/bug4445.2

into pcgem.rdg.cyberkinetica.com:/var/db/bk/work-acurtis/bug4445.2

into pcgem.rdg.cyberkinetica.com:/var/db/bk/work-acurtis/bug4445.1

  Make a more informative platform info for Windows

into mysql.com:/home/pem/work/mysql-5.0

into mysql.com:/space/pekka/ndb/version/my41-1.2154.30.2

into mysql.com:/Users/kent/mysql/bk/mysql-4.1-perl

into gluh.mysql.r18.ru:/home/gluh/MySQL/mysql-5.0

  Test case for bug#8522, to test for out of bounds memory access in ft_nlq_find_relevance().

into mysql.com:/home/mysql_src/mysql-4.1-clean