Allows others to build OpenBSD/cats, use binutils from devel/binutils/stable
Requested by deraadt@

to built-ins, so eventually we will have one version of these files.
Special adjustments for the kernel to cope: machine/stdarg.h -> sys/stdarg.h
and machine/ansi.h needs to have a _BSD_VA_LIST_ for syslog* prototypes.
okay millert@, drahn@, miod@.

get rid old include files; with itojun@ and tdeval@; ok itojun@, deraadt@

* manpage related things moved to src/libssl/man/Makefile
* there are now 3 obj directories src/libssl/{crypto,ssl,man}/ instead
of one single src/libssl/obj
* instead of running Configure (with generates lots of symlinks, and
opensslconf.h) this patch stores pre-computed opensslconf.h files
in src/libssl/crypto/arch
* requires a make includes before the library can be built
* libssl and libcrypto can be build separately
(e.g. cd src/libssl/ssl && make obj && make)
* make depend is now supported
* no more symlink trees
tested by miod@ and fries@

a.out stuff in link_aout.h and ELF stuff in link_elf.h.
Switch sparc64 back to MI link.h.
drahn@ ok (powerpc will switch soon).

Fixes this for lex and binutils' bfd.
Also, do not install ansidecl.h, we don't really need it, bfd.h uses it,
and we installed it so that bfd worked, so let bfd.h include it directly.
prompted by mickey@

checking if a make build of the entire system still works?  How many
other parts of the tree are now not going to build?  All development
has not stopped until this is fixed.

- remove extra subshells;
- use exec on terminal commands, avoiding dangling shells that don't
control anything.
More correct:
- use && some more;
- remove `-' in front of includes, so that failures WILL fail...
Okay millert@, deraadt@

in the binutils dir.

Ok'd deraadt@, millert@

are created properly.

Closes PR 1246

which will come later.  At this stage it is primarily used for setting
resource limits.

(ok art@)

this will help future apps from complexity of SIOCGIFCONF.
NOTE: getifaddrs(3) uses sysctl interface, not SIOCGIFCONF.

Install it under /usr/include