Add test for prepared queries with bool parameter.

This test was created based on a report from Andrus Moor in the help forum:
http://pgfoundry.org/forum/forum.php?thread_id=15672&forum_id=519&group_id=1000140
Boolean binary backend encoding fix

Send proper byte[] values for binary encoded boolean parameters.
Expand new boolean parameter tests to include non-prepared, prepared, and prepared with suppressed binary.
Mark TestBoolParameterPrepared2() ignored, as it is out of scope for this branch/fix.
Merge pull request #93 from glenebob/false-parameter-value-passed-as-true

Boolean binary backend encoding fix
Merge pull request #94 from franciscojunior/false-parameter-value-passed-as-true

Boolean binary backend encoding fix. By Glen Parker