NOTES on cross developement software.

ld86, ccom86, and as86 come from MIT.  cc86 is a (slightly) modified
version of the UNIX cc.c.

Ld86 appears to be the standard UNIX loader hacked up to remove stuff
related to demand paging that is irrelevant to the 8086 stuff.

nm86, lorder86, ranlib86, size86, are the UNIX sources modified ONLY 
to change the magic numbers that they use. If we use the UNIX magic 
numbers for our .o and .out files, we could use the UNIX utilities 
in /bin.