Log Message:
Changes 1.2.12:
- Fixed problem with DDL SCRIPT parser where C-style comments were
  not being processed properly
- Added stored functions and documentation for adding empty tables
  (notably *partitions*) to replication.  Note these functions
  do no work when not specifically requested.
- Added a fairly substantial partitioning test to exercise the
  new stored functions above.
- Backport "listen path" generator function from CVS HEAD (2.0) to
  1.2 branch.
- Fixed a problem with "EXECUTE SCRIPT" (introduced in remote_worker.c
  version 1.124.2.13) where moving the relevant code into a subroutine
  at the end led to losing the "BEGIN; SET TRANSACTION ISOLATION LEVEL
  SERIALIZABLE;" query that needs to be the first thing run...
- Fixing the archive sequence generations (in log shipping).  All
  non-SYNC events must start the local transaction before creating the
  archive as well, so that the lock on the archive counter table
  serializes archive creation.
- Fixed logging done in local_listener.c - various places, there was
  no '\n' in some cases, which would lead to entries being folded
  together.
- Fix launch_slons.sh - was not stripping quotes from PID file name
- Error handling for "ERROR: could not serialize access due to
  concurrent update"
- Fixes to slonik_build_env script - it wasn't properly handling
  cases where there was just 1 table or 1 sequence, and had a
  problem with the -schema option - thanks, Bernd Helmle