Django-oraclepool

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- Fix database connection usage for django 1.4 compatibility
[Ed Crewe]
- Fix tests/monkeypatch for performance and regression tests to work OK
[Ed Crewe]
- Add alias to pool to ensure each connection has its own pool
[Marc Bee]

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- Make self.features = DatabaseFeatures(self) to work with oracle connector change
- Fix the timezone for the tests
- Improve the error reporting if the connection fails due to wrong credentials etc.

[Ed Crewe]

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- Optional switch of use of LIKEC for LIKE since LIKEC ignores indexes in old Oracle
so has much worse performance, see http://code.djangoproject.com/ticket/11017
- Tested an application and the test suite with django 1.2.3 and python 2.6
[Ed Crewe]
- Clean up raising of strings, required for python 2.6 or higher
[Reinout van Rees]
- Lost an indent along the way for log_sql append to screen
[kylen]
- Fix multiple pool creation bug under heavy initial load - with locking
[Aa`Koshh]
- Fix old settings style with django 1.1 python
[akhenakh]

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- Use django 1.2 database settings format by default
- Fix a bug with adding sql log to page when in DEBUG
- Remove print statements where not critical failiure since they will cause one with wsgi
- Drop homogeneous extra argument since unecessary and breaks if used with earlier cx_Oracle
- Fix tests for earlier cx_Oracle
- Remove unused separate class declaration for pools
- Make sure all tests pass
- Ensure default settings are picked up when using old format settings with 1.2 [Marc Bee]

[Ed Crewe]

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- Fix a bug preventing the logger from being used
- Make sure session settings are only set on connection creation not cursor use
- Add a session list of sql lines for optionally setting session parameters
- Wrap connection signal in try except for older django compatibility.

[Ed Crewe]

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- Whoops, I realised the performance test was underplaying the improvement due to a bug,
it now gives the same performance for single connections (as expected) and 300%
improvement for multiple ones.
- Added signal for connection 'creation' and fixed raise of unicode error

[Ed Crewe]