devel/adasdl: Move to Ada framework
Currently this port has a hard dependency on lang/gnat. This has been
replaced with USES+=ada and minor changes to incorporate it into the Ada
framework with a PORTREVISION bump.
The makefile header was trimmed, spaces were replaced with tabs, the
leading article was removed from the COMMENT, USES_GMAKE was converted
to USES and GMAKE was redefined in order to access the environment
This is a very old program, and the data types defined in it in are
too small for amd64. Redports confirms it will not build on this platform
so ONLY_FOR_ARCHS=i386 is set as well.
Approved by: bapt & culot (mentors)