add documentation that mentions that the filenames of installable files have changed
add in a check/test to ensure that the backup node in a failover is a forwarding subscriber

If the backup node is not a forwarding subscriber to all of the sets from the origin
then the failover can't complete.  It is best to check this early on and warn the user
before the failover actually starts.
The table definitions we create on a 2.1 -> 2.2 upgrade should match the updated DDL in slony1_base.sql
This is to fix bug 306
Merge branch 'bug306'

Conflicts:
	doc/adminguide/slonyupgrade.sgml
updating versions for 2.2.0 beta 5
bug 306 release notes update
fixing sytnax errors in documentation SGML
updating version to for 2.2.0 b5
upating win32 symbol definitions for 2.2.0 b5
C requires variable declarations to be at the start of the block