Use timeout from parameter or settings instead of default.

Use timeout from parameter or settings instead of default in
SQL queries. Thanks to the Mono compiler for the warning
about an unused variable.
Use string variable instead of calling ToString again.

Thanks to the Mono compiler for the unused variable warning.
Tweak solution build settings to avoid warning.

Build pgdbsc.Integration with x86 platform config in Mixed Platforms solution config to match pgdbsc.