pgsql: PL/Python: Avoid lossiness in float conversion

PL/Python: Avoid lossiness in float conversion

PL/Python uses str() to convert Python values back to PostgreSQL, but
str() is lossy for float values, so use repr() instead in that case.

Author: Marko Kreen <markokr@gmail.com>

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/1ce7a57ca6e8c5212fa2ab3bf31d56c74d5b5b8f

Modified Files
--------------
src/pl/plpython/expected/plpython_types.out |    8 ++++++++
src/pl/plpython/plpy_typeio.c               |   12 ++++++++++++
src/pl/plpython/sql/plpython_types.sql      |    1 +
3 files changed, 21 insertions(+)