clean up COMPAT_* options for native netbsd code:
- new series of files that are useful for saying "i want everything
since netbsd 1.4", etc.
- use the fact COMPAT_* options have future dependancies to remove
many redundant options.

removes about 3000 lines total across kernel configuration files.
tested about 30 random kernels in the changed list.

Remove TCP_COMPAT_42 from the config files. Pass 2.

branches: 1.34.2;
Systematize (and in many cases, fix) the comments on options COMPAT_NN.

There are quite a few configs that are missing some COMPAT_NN options
in ways that don't make sense; this should probably get cleaned up
too, but for the time being I've not added or removed anything.

Use COPTS="-O2 -fno-reorder-blocks" as defined in sys.mk for userland.

Compile tests only.

branches: 1.32.10;
Retire OSI network stack. OK core@

branches: 1.31.8;

The rnd pseudo-device is not really optional, because it is in the same
source file as the entropy-pool code itself. Move it to std. This
will be cleaned up more when I split the sources up as they should be.

This fixes build breaks on several ports. Thanks to Havard Eidnes for
pointing them out.

branches: 1.30.2;
dependant -> dependent

Remove unused count (invariably "4") from pseudo-device fss.

branches: 1.28.18; 1.28.20;
Add options COMPAT_40 to files which have options COMPAT_30.

branches: 1.27.62; 1.27.64; 1.27.66; 1.27.68;
It's NULLFS, not NULL.

Add ksyms
Add file-systems for NULL & TMPFS

branches: 1.25.2; 1.25.4; 1.25.6;
Remove 'count' argument for pseudo-devices that ignore it
(vnd, bpfilter, ppp, gif, gre, tun, sl, strip, faith, stf).

branches: 1.24.2; 1.24.4; 1.24.6;
Adjust comments for options FFS_NO_SNAPSHOT.

XXX: This option should be mentioned in options(4).

Enable ptyfs by default on the non-install and non small/tiny/ramdisk kernels

64 bit inode changes.

branches: 1.21.4;
Add COMPAT_20 (and COMPAT_16 in some cases) to kernel config files
that didn't have those options but had other earlier compat options.

Invert FFS_SNAPSHOT to FFS_NO_SNAPSHOT

Add file system snapshots to kernel configs.

- Ffs internal snapshots get compiled in unconditionally.

- File system snapshot device fss(4) added to all kernel configs that
have a disk. Device is commented out on all non-GENERIC kernels.

Reviewed by: Jason Thorpe <thorpej@netbsd.org>

branches: 1.18.4; 1.18.6;
Add COMPAT_BSDPTY to the rest of the config files.

Add "options SYSCTL_INCLUDE_DESCR" to a lot of configs, but commented
out in most of them.

branches: 1.16.2;
add COMPAT_15/COMPAT_16

branches: 1.15.6;
enable USERCONF by default; it's small and extremely useful to have available.

Enable "pseudo-device clockctl" in all kernels, except
installation related kernels (INSTALL* and RAMDISK*).
This enables rc.conf(5) $ntpd_chroot to be used "out of the box"

branches: 1.13.2; 1.13.4;
Add the INCLUDE_CONFIG_FILE option to all config files. In config
files that are generic (ie, GENERIC, GENERICSBC, GENERIC32, ALL, or
ALPHA), it is uncommented.

Add commented-out USERCONF option. Mainly useful for install media
and can be optionally enabled based on miniroot and ramdisk size
requirements.

add options PIPE_SOCKETPAIR to individual kernel configs
the option is commented out on everything but kernels I was able
to recognize as INSTALL-like or ones for small memory machines

cleanup:
options SPACE TAB
makeoptions TAB
psuedo-device TAB
remove trailing whitespace
replace multiple spaces -> tabs
options "FOO" -> options FOO
options "FOO=bar" -> options FOO=bar
options "FOO=\"bar\"" -> options FOO="\"bar\""

branches: 1.9.6;
memc attaches at mainbus now.

branches: 1.8.2;
Standardise TCP_COMPAT_42 as commented out, grouped with other COMPAT options,
and with the comment '4.2BSD TCP/IP bug compat. Not recommended'
Add commented out 'TCP_DEBUG # Record last TCP_NDEBUG packets with SO_DEBUG'
(All hail amiga and atari which make some attempt to automate the
multiplicity of config files...)

Enable DHCP and BOOTP as supported diskless NFS boot options.

Add rnd(4) pseudo-device.

Switch to the MI 53c710 driver recently committed by Izumi Tsutsui.

branches: 1.4.2;
Add "options COMPAT_AOUT_M68K".

Add the memory controller ASIC driver.

Add CD9660, plus some general cleanup.

branches: 1.1.2;
Add support for the m68060-based machines: MVME-172 and MVME-177.
CPU support taken from a combination of NetBSD/amiga and NetBSD/x68k.

At this time, MVME-172 works but MVME-177 is untested. Since the '177
is otherwise identical to the MVME-167, this should *just work*.