UFS/LFS dirhash:
- Enable UFS_DIRHASH if the architecture or kernel model specific config
file can use 128MB of RAM or more.
- Remove experimental tag from UFS_DIRHASH; it's been with RUMP kernel
and by a number of NetBSD developers for years.
- Add LFS_DIRHASH if LFS was enabled.
- Be somewhat consistent with FS options order.

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.

branches: 1.30.6;
WABPL is no longer considered experimental (has not been for some time)
so update its comment in config files.

branches: 1.29.8; 1.29.12;
Remove unused count from pseudo-device md.

Added support following boards.
- AlphaNet MS104-SH4
- TAC T-SH7706LAN Ver.3
- TAC T-SH7706LSR Ver.1

branches: 1.27.4; 1.27.6;
Changes to MEMORY_RBFLAGS option:
- renamed to MEMORY_DISK_RBFLAGS to better fit the rest of the
MEMORY_DISK options(4)
- change default value to RB_AUTOBOOT instead of RB_SINGLE, and adapt
the config(5) files accordingly
- document this option inside options(4)

See also http://mail-index.netbsd.org/tech-kern/2008/12/25/msg003924.html

Reviewed by abs@ in private mail.

branches: 1.26.2;
Add "options WAPBL" to standard GENERIC/INSTALL type configs.

branches: 1.25.52; 1.25.56; 1.25.58; 1.25.62;
Switch the rest of sh3 ports to todr(9)
Split code to handle on-chip rtc into a separate driver
Eliminate all todr code from clock.c
Move __HAVE_GENERIC_TODR to sh3/include/types.h

branches: 1.24.20; 1.24.22;
Adjust comments for options FFS_NO_SNAPSHOT.

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

branches: 1.23.6;
Invert FFS_SNAPSHOT to FFS_NO_SNAPSHOT

branches: 1.22.4; 1.22.6;
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: 1.20.6; 1.20.8;
enable USERCONF by default; it's small and extremely useful to have available.

branches: 1.19.2;
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: 1.18.2; 1.18.4;
IOM_RAM_BEGIN is changed to specify physical address.

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.

remove unused option

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

Rename MEMORY_DISK_SIZE (formerly MINIROOTSIZE) to MEMORY_DISK_ROOT_SIZE,
which was suggested by Izumi Tsutsui <tsutsui@ceres.dti.ne.jp> as
being more consistent with what it's controlling...

adapted to new interrupt code and shb changes.

* rename MINIROOTSIZE to MEMORY_DISK_SIZE, so that all md(4) options
are now consistently named
* fold opt_mdsize.h into opt_md.h

s/MMEYE_NO_CACHE/CACHE_DISABLE/

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: 1.8.4;
split big/little endian better.

branches: 1.7.2;
don't specify number of ptys if >= 16 (current default initial number)
pty comments: normalize and g/c what is no longer relevant

- enable KERNFS and PROCFS
- disable NULLFS and UMAPFS

- remove "options PMAP_NEW"
- enable "options INET"
- enable "pseudo-device loop"

add COMPAT_14

use 'makeoptions LDSCRIPTBASE="sh.x"' (or shl.x) to select ldscript file

branches: 1.2.4;
add commented out option PCI_CONFIG_DUMP whever there's a PCIVERBOSE.

Computex's SH7750 evaluation board