Do not put any link-layer address on the per-ifp lists or on the RB-
Tree.

Since interfaces only support one link-layer address accessible via the
if_sadl member, there's no need to have it elsewhere.  This improves
various address lookups because the first element of the list, the link-
layer address, won't necessarily be discarded.

Finally remove the empty netmask associated to every link-layer address.
This hack was needed to (ab)use the address & netmask comparison code to
do a strcmp() on the interface name embedded in the sdl_data field.

ok henning@, claudio@
improve logging messages and style; requested by and ok reyk
Make the df calculations of available space the same as that done in
ffs_statfs().

In 1998, with /usr/src/sys/ufs/ffs/ffs_vfsops.c r1.16, mickey@
improved the calculation of available blocks in ffs_statfs().

Yesterday guenther@ noticed that this fix had not been applied to the
same calculation being done by df(8) when run against raw
devices. Which meant different values were displayed depending on
which device/file system you gave to df.

ok otto@
Add Alcatel OneTouch L100V

Diff from Lukasz Ratajski

ok sthen@
regen
It seems that there is new and old revision of CH340.
Previous uchcom(4) driver targeted old one, and new one could not work
because of uchcom_set_line_control() broke the value of
UCHCOM_REG_LCR1(0x18).

To support new CH340, uchcom_set_line_control() and uchcom_reset_chip()
have been overhauled. Current uchcom(4) does not change the value of
UCHCOM_REG_LCR1 register, it means even/odd parity mode is no longer
supported with old CH340.

ok by mpi@
use $2b in the bcrypt example, ok tedu
When OPENSSL_LOAD_CONF was added it ended up with more #if 0 code,
more #ifdefs and a new source file that contains a single function.

Nuke the #if 0 code that is now a macro and move the single function in
evp_acnf.c to c_all.c, which is where the other code lives. While here,
tidy evp.h slightly, remove an unnecessary #ifdef __OpenBSD__ and nuke
a comment that is now a lie.

ok miod@
Fix various issues that result in compiler warnings.

Prompted by a diff from Brent Cook.
Include openssl/evp.h for OPENSSL_add_all_algorithms_noconf().

From Brent Cook.
rework -C (perfect candidate for using hash tables, really):

insert files we want to check into a hash,
parse SHA256 message on the fly, delete entries whose checksum match,
then display entries that failed.

This completely avoids allocating temporary storage for file names and checksums
and removes the quadratic match (argv[i] vs line[n]).

okay tedu@
Zero out grp before re-using it (new ones are already cleared by
calloc).   We only reuse grp when there is an unresolvable host.
Fixes a bug where if a host in a netgroup is unresolvable then
entire netgroup is ignore.  OK krw@
checksum mode can use magic pubkey finder too
a few changes for new code to match local style
There is no need to remember which usb(4) device is the child of an USB
host controller because autoconf(9) already does it.
save up the failures for the end in the argc == 0.
help ok espie
Reduce the difference between HC drivers by always passing a generic
usbd_xfer pointer to the routines processing finished transfers to make
it crystal clear that the timeout and abort logic is the same everywhere.
sync
add prototypes for new crypt functions
document crypt_checkpass