ANSI "include" files?

[RAMontante]

Could someone provide me with a list of the standard header files that
one should expect in an ANSI C package (such as gcc)?  In particular, I
need to know which header files weren't standard in pre-ANSI C.

The reason is that I'm trying to get my (helpful but overworked) sysadmins
to copy gcc over from a research VAX to another one that we're teaching on.
I've got the compiler so far, but no man pages and no "include" files or
libraries.  The people with root privileges aren't real close to this
new-fangled C biznez anyway, so it's a piecemeal affair.  Confuses the
heck out of the students when the K&R examples fail in strange ways.

If you're feeling verbose, I could also use any advice on making the move
from ULTRIX cc and vcc to gcc.  Legal issues?  The thought just crossed
my mind....

E-mail or post as you think appropriate; and many thanks!

bob montante