help, testing & ok rpe

to /usr/src or /usr/xenocara.
Change /usr/{,x}obj to owner build:wobj with mode 770 and install the
systemwide makefiles before starting a build.  The root of the noperm fs
containing DESTDIR should also be owned by build:wobj.
Developers will need to add their users to group wobj to be able to write
to /usr/{,x}obj/.
"push forward" deraadt; testing, input & ok rpe

defaults for building the system from source.
ok deraadt

issue reported by scott cheloha
ok otto

Proposed some time ago by tedu@, builk build by ajacoutot@

OK tb@

flag to chown to change the symlinks themselves instead of their targets.
Also change permissions of all symlinks, so they don't depend on the umask
during make build.
ok millert

The installer will create these directories during install.
So local setups will not get overwritten during upgrades.
idea from and OK deraadt@
with help from and OK tb@
feedback from and no objections halex@

with 'cvs up'.  Prompted by a question by patrick keshishian, diff
by Raf Czlonka.
ok phessler, jca; mild opposition from schwarze

been the default for ages, and I see no valid reason to be able to
disable it. ok natano@

quickly. In both cases it does not make sense to set hints on them.
So remove that option, which is just a remainder of old times when
malloc used to hold on to pages. ok stefan@

- redundant cast is redundant

time when we had national language support.
OK millert@

to send message to the child process. Do like we learned in httpd(8).
ok deraadt@

this should fix the problem with random ntpd(8) deaths.
ok deraadt@

and add prereq targets, so some header files are generated by BUILDUSER
during 'make prereq' instead of by root during 'make includes'.
Switch the order of 'make cleandir' and 'make includes' during 'make build'
so we don't generate many files twice.
Except for some machine@ symlinks from ${MACHINE}/stand, /usr/obj is now
clean from files generated by root during 'make build'. Those will be
cleaned up in a second step.
help, testing & ok deraadt, input from natano, further testing rpe

others.
C11 6.5.6.9 says:
When two pointers are subtracted, both shall point to elements of the
same array object, or one past the last element of the array object; the
result is the difference of the subscripts of the two array elements.
In these cases the objects are arrays of char so the result is defined,
and we believe that the report is based on a compiler incorrectly trapping
on defined behaviour.

prodded by otto@
ok kettenis@ otto@

and de-escalate to $BUILDUSER.
Much help from natano and tb.

Based on patch from yuanjie.huang at windriver.com via OpenSSH bz#2608,
with & ok millert, ok deraadt.

additional actions before printing it.  OK rzalamena@

recomputing it all the time

error cases for -1 and 0 explicitly (it initially only checked for -1,
I updated it to also check for 0, and rzalamena@ figured out that 0
has to be checked in a differently).
OK millert@ rzalamena@

filesystem permissions are required.
requested by deraadt

down and enforce reasonable permissions for RELEASEDIR.
prodded by and ok deraadt
ok tb

instead of chunk itself; does not change actual allocated size; ok tedu@

max, it won't be set. noted by Evgeny Grin; ok millert@

OK deraadt@

OK mlarkin@ deraadt@

of the target to the message to be more descriptive.
ok deraadt tb

when the source tree is not owned by ${BUILDUSER}.
ok deraadt