fixing  Deadlock with application during minor version slony upgrade
fixing  Deadlock with application during minor version slony upgrade
Bug 338 - Have ddlScript return a bigint since the action_seq is a bigint
Document the EXECUTE ONLY ON list of nodes syntax

Also add a regression test to test this
Changing version number of master to 2.3.0
Fix typo in preamble for regression tests
add another multi-node failover configuration to the test
Remove HAVE_POSIX_SIGNALS from config.h

Compiling slony against PG 9.4 gives compiler warnings because the
definition of HAVE_POSIX_SIGNALS has changed.  This is defined in pg_config
so we do not really need to redefine it in the config.h slony provides.

We leave the configure check in place to we just don't include it in
the header
Bug 342 - Fix various failover issues

This commit fixes some related failover issues
1.  The query slonik used to get a node list during failover
    was ignoring non-failover targets. This meant that we
    would never call preFailover on a node that wasn't a failover
    target.  This node might then still be trying to use
    a failed provider.
2.  A node (say node 3) might process a FAILOVER_NODE
    event from node 2 (the new-origin) but might not
    have yet processed the last event from node 1, the
    failed node.  We need to make sure that the
    subscription paths and listen networks are updated
    so we don't only listen for events and data from
    failed nodes.
fixing generate load origin node parameter mismatch
Continue setting options even if a non-existing one
was encountered. Fixes bug 343.