release number bumped to 868 by export.pike
release number bumped to 869 by export.pike
ZXID: Fixed warning about redefined symbol.

GETTIMEOFDAY is defined in both port.h and <zxid/errmac.h>.
We don't use either in the ZXID module, so just undef the
first definition.
release number bumped to 870 by export.pike
release number bumped to 871 by export.pike
Updated to tzdata2014e.