Обсуждение: pgsql: Add POD docs to PostgresNode

Add POD docs to PostgresNode

Also, the dump_info method got split into another method that returns
the stuff as a string instead of just printing it to stdout.

Add a new README in src/test/perl too.

Author: Craig Ringer
Reviewed by: Michaël Paquier

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/e64009303d4e2434abafbdafe4d571cc4f279d39

Modified Files
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src/test/perl/PostgresNode.pm | 395 ++++++++++++++++++++++++++++++++++++++----
src/test/perl/README          |  53 ++++++
2 files changed, 419 insertions(+), 29 deletions(-)