New Watchdog options - verbosity

Implementing new parameters on slon_tools.conf
WATCHDOG_VERSION : select watchdog to start
   1: slon_watchdog
   2: slon_watchdog2

WATCHDOG_VERBOSE: enable/disable verbosity of watchdog logs

START_WATCHDOG and SLEEP_TIME: just declaring since the funcionality
  was already implemented

slon_watchdog2: making the routine functional since some bugs was detected,
  routine updating as changes detected on slon_watchdog

Branch
------
master

Details
-------
http://git.postgresql.org/gitweb?p=slony1-engine.git;a=commitdiff;h=8791cda2219053ae3abd4d28b504338658f05a55

Modified Files
--------------
tools/altperl/slon_start.pl          |    7 ++-
tools/altperl/slon_tools.conf-sample |   12 ++++
tools/altperl/slon_watchdog.pl       |   53 +++++++++++++------
tools/altperl/slon_watchdog2.pl      |   96 ++++++++++++++++++++++++----------
4 files changed, 124 insertions(+), 44 deletions(-)