Guide to alternative expected files:

plpython_error_0.out		Python 2.4 and older

plpython_unicode.out		any version, when server encoding != SQL_ASCII and client encoding = UTF8; else ...
plpython_unicode_0.out		any version, when server encoding != SQL_ASCII and client encoding != UTF8; else ...
plpython_unicode_2.out		Python 2.2
plpython_unicode_3.out		Python 2.3 through 3.1

plpython_types_3.out		Python 3.1
