Convert from Sun DevGuide to BX PRO

Builder Xcessory provides an "Import GIL" option on all UNIX platforms. This allows BX PRO to directly
import GIL version 3 (GIL-3) files. If you have GIL-2 files, you can convert them to GIL-3 by reading them
into Devguide Version 3, and then saving them.

The Import GIL option is not available on Linux platforms. However, you can do the conversion on a
UNIX platform and then transfer the BX UIL file to Linux for further development using BX PRO.