installword broke everything

[Søren Lott]

running installworld failed when upgrading from SNAP005 to newest -CURRENT,
with error Makefile.inc1:156: "LC_CTYPE=C date" error returned non zero status
after that everything segfaults,dumps core and i cant login into my system.

i followed the exact steps in UPDATING:
make buildworld
make buildkernel KERNCONF=current6
make installkernel KERNCONF=current6

boot -s
fsck -p
mount -u /
mount -a
adjkerntz -i
mergemaster -p
make installworld