Replace c extension with cython versions.workflow_test_cython

Re-implement c version immutabledict / processors / resultproxy / utils with cython.
Performance is in general in par or better than the c version
Added a collection module that has cython version of OrderedSet and IdentitySet

Added a new test/perf file to compare the implementations.
Run ``python test/perf/compiled_extensions.py all`` to execute the comparison test.

See results here: https://docs.google.com/document/d/1nOcDGojHRtXEkuy4vNXcW_XOJd9gqKhSeALGG3kYr6A/edit?usp=sharing

Fixes: #7256
Change-Id: I2930ef1894b5048210384728118e586e813f6a76
Signed-off-by: Federico Caselli <cfederico87@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/test/aaa_profiling/test_memusage.py b/test/aaa_profiling/test_memusage.py
index a876108a6..8d6e4f500 100644
--- a/test/aaa_profiling/test_memusage.py
+++ b/test/aaa_profiling/test_memusage.py
@@ -15,6 +15,7 @@ from sqlalchemy import testing
 from sqlalchemy import Unicode
 from sqlalchemy import util
 from sqlalchemy.engine import result
+from sqlalchemy.engine.processors import to_decimal_processor_factory
 from sqlalchemy.orm import aliased
 from sqlalchemy.orm import clear_mappers
 from sqlalchemy.orm import configure_mappers
@@ -28,7 +29,6 @@ from sqlalchemy.orm import Session
 from sqlalchemy.orm import sessionmaker
 from sqlalchemy.orm import subqueryload
 from sqlalchemy.orm.session import _sessions
-from sqlalchemy.processors import to_decimal_processor_factory
 from sqlalchemy.sql import column
 from sqlalchemy.sql import util as sql_util
 from sqlalchemy.sql.visitors import cloned_traverse