Add Alcyon C object file support

Add Alcyon C object file support

Support ingesting the DRI Alcyon C object file
format in addition to a.out object files. The load
file routine simply translates the Alcyon object
file into an a.out file before passing it on to
the existing processing workflow.

The motivation here was to enable linking of the
binary-only cinepak decompression GPU routines
provided in the developer files. ALN can handle
these files just fine, and now RLN can too.

However, that is a very simple object files To
fully exercise the relocation table translation
code, contrived assembly files with all types of
relocations were assembled as Alcyon C object
files using MADMAC and BSD/a.out object files
using RMAC (Note RMAC had to be used to generate
the a.out files because MADMAC generates invalid
a.out relocations for certain relocation types
that it handles fine in Alcyon format), and then
both object files were linked as COFF executables
using RLN. The resulting COFF files were verified
to be identical.