x-hp3bsd44

[Jeffrey A Law]

x-hp3bsd44 provided an override for USER_H, which is generally a bad
idea.

In this particular case it didn't install varargs.h, stdarg.h, stddef.h,
stdbool.h and a variety of other files.  The net result (aside from missing
files) is that __gnuc_va_list was undefined.

fixincludes or fixproto replaces references to va_list with __gnuc_va_list
in stdio.h.  Since the __gnuc_va_list type was never defined, code which
included stdio.h failed to compile.

I've removed x-hp3bsd44, which fixes this problem.  m68k-hp-bsd4.4 is much
happier now and we're into stage2 of a bootstrap on this blindingly fast
target.

jeff