Merge pull request #299 from madaleno/master

updated FirebirdTests/SqlServerExpressionsTest
Check DoesTableExist correctly when dropping table in OrmLiteWriteExtensions
Removed OrmLiteDropTableTests from project
Merge pull request #302 from yavosh/master

Fix for drop table when using PostgreSqlNamingStrategy
Ensure that no first chance exceptions are thrown by IDbConnection.GetOrdinal
Merge pull request #303 from fvoncina/prevent-first-chance-exceptions

Prevent raising inner exceptions while IDataReader tries to get ordinal for field names.
Re-factor parameterized methods on IOrmLiteDialectProvider to make them fewer and more consistent
Add InsertAndGetLastInsertId and DRY-up GetLastInsertId provider impls
Add InsertParam lastInsertId tests for SqlServer and Sqlite
Added support for NonQuery to get affected rows

- Added support for free text sql statements with optional params which
allows the called to get the number of affected rows. This should be
usable across all databases since it's using the standard
ExecuteNonQuery from IDbCommand.
- Added unit tests for the functionality
Renamed to ExecuteNonQuery to improve readability

- Refactored NonQuery to ExecuteNonQuery so that the implicit meaning of
the method translates in a better understood API.
Merge pull request #304 from devrios/master

Added support for NonQuery to get affected rows
INCR to v3.9.58
Make index fields cache more resilient.
Fix spelling mistake in README.md.
Merge pull request #305 from dissection/master

Changed 'to' to 'two' in readme.
Merge branch 'master' of https://github.com/ServiceStack/ServiceStack.OrmLite into northwind