New IBProvider support of 49 code pages

The new IBProvider version:

Support of 49 Firebird and Interbase code pages including UNICODE_FSS, UTF8 and OCTETS binary data. Supported character sets.
Possible provider operation without registration in the system via manifest file.
The article: Example of working with Firebird and Interbase without registering additional components.
Prevention of memory leaks in Firebird client during library unloading.
Specific errors have been fixed.