revision of node_is_subscribing function

- Type cast bug
- Space on qq and { causing sintax error
- initializing $nodenum parameter
- Creating a workaround in case of password for conection is defined to allow psql to connect
  Used PGPASSWORD enviroment variable.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=slony1-engine.git;a=commitdiff;h=49bb63e310bcfebd4be249ea37cfbc734a5b429b

Modified Files
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tools/altperl/slon-tools.pm |   15 ++++++++++-----
1 files changed, 10 insertions(+), 5 deletions(-)