Add ufs2 to the list of filesystem, for the sake of boot blocks which do not
provide an explicit list of files to build in libsa.

In the bootblocks, after discovering and opening /bsd.upgrade, fchmod -x
so the file cannot be re-executed upon the next boot. This provides a
stronger one-shot-upgrade model than the upgrade script

In the bootblocks, after discovering and opening /bsd.upgrade, fchmod -x
so the file cannot be re-executed upon the next boot. This provides a
stronger one-shot-upgrade model than the upgrade script's rm /bsd.upgrade.
Now various forms of upgrade failure will reboot into /bsd, which is probably
more recoverable. Performing fchmod -x depends on (1) use of MI boot.c
(not alpha/macppc/sparc64/sgi/octeon) and (2) "can write blocks" functionality
in the IO layer. Most architectures have this support now.

Two diagnostics "fchmod a-x %s: failed" and "/bsd.upgrade is not u+x" will
remain in the tree while refinements happen for some of the laggard
architectures.

based upon a discussion florian
tested in snapshots for more than a week without any complaints

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libsa's memcpy() is actually memmove(). make a proper memmove(), and give
memcpy() correct behaviour. This also brings the bcopy() macro into line.

Replace unbounded gets() in libsa with getln() which takes a buffer size,
and convert all gets() users.
ok deraadt@

Remove orphaned files.

Move {recv,send}udp() out of net.c into their own file; to be used shortly.
Add the new files to the few md libsa builds which require it.

move putchar() into libsa

"sure" miod@

Remove libsa exec.c, not used by anything anymore; all boot blocks now use
loadfile or a derivative of.

Remove unused XCPPFLAGS.

-ansi considered harmful, even in comments

strcpy/strcat/sprintf removal in all bootblocks. various testing by
various people. outside of some messy things in src/gnu, only one
thing in the main tree now violates this rule: bind

Add MI loadfile support, from NetBSD
This is currently only used on powerpc, but may be looked
at for other architectures.
Piece of the support to have kernel symbols on powerpc.

Add strchr.c

Nuke i386 specific stuff. Not needed anymore.

no more arch/i386/stand/libsa/Makefile.inc

no unixdev by dafault

test/debug device, readdir->Makefile

* remove reference to non-existant fat.c.
* make cread.c work with libz again.

remove net/zlib.c (use -lz now)
export NO_NET and SA_ZLIB to the Makefile (from Makefile.inc)
add -p printf flag (tiny code) just for gcc -Wall
import latest alloc.c from netbsd
text data bss

remove net/zlib.c (use -lz now)
export NO_NET and SA_ZLIB to the Makefile (from Makefile.inc)
add -p printf flag (tiny code) just for gcc -Wall
import latest alloc.c from netbsd
text data bss dec hex
400 8 0 408 198

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need -I for zlib.c

add strncmp
use net/zlib.c
do not compile some files w/ NO_NET

Add libz and make libsa aware of it. From NetBSD.

Merge to NetBSD 961207

cleanup, add new files

zlib need this