*) Fixed incorrect ngx_cpystrn() usage in ngx_http_*_process_header().

   This resulted in a disclosure of previously freed memory if upstream
   server returned specially crafted response, potentially exposing
   sensitive information.

   Reported by Matthew Daley.

*) Headers with null character are now rejected.

   Headers with NUL character aren't allowed by HTTP standard and may cause
   various security problems.  They are now unconditionally rejected.

ZFS reports incorrect st_blocks until file settles on disk, and this
may take a while (i.e. just after creation of a file the st_blocks value
is incorrect).  As a workaround we now use st_blocks only if
st_blocks * 512 > st_size, this should fix ZFS problems while still
preserving accuracy for other filesystems.

The problem had appeared in r3900 (1.0.1).

Fix of rbtree lookup on hash collisions.

Previous code incorrectly assumed that nodes with identical keys are linked
together.  This might not be true after tree rebalance.

Patch by Lanshun Zhou.

Fixed null pointer dereference in resolver (ticket #91).

The cycle->new_log.file may not be set before config parsing finished if
there are no error_log directive defined at global level.  Fix is to
copy it after config parsing.

Patch by Roman Arutyunyan.

*) Renamed constants and fixed off-by-one error in "msie_padding on"
   handling.

*) Added support for the 307 Temporary Redirect.

*) Fixed build with embedded perl and --with-openssl.

*) Configure: moved icc detection before gcc.  New versions of icc
   confuse auto/cc/name due to introduced handling of a "icc -v".