pgsql: Add valgrind suppressions for python code.

Add valgrind suppressions for python code.

Python's allocator does some low-level tricks for efficiency;
unfortunately they trigger valgrind errors. Those tricks can be disabled
making instrumentation easier; but few people testing postgres will have
such a build of python. So add broad suppressions of the resulting
errors.

See also https://svn.python.org/projects/python/trunk/Misc/README.valgrind

This possibly will suppress valid errors, but without it it's basically
impossible to use valgrind with plpython code.

Author: Andres Freund
Backpatch: 9.4, where we started to maintain valgrind suppressions

Branch
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REL9_5_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/fd1cf9d8407589fae354e1a5b852f33eedc7f67f

Modified Files
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src/tools/valgrind.supp | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 66 insertions(+)