*) Fixed location of debug message in ngx_shmtx_lock().

*) Core: don't reuse shared memory zone that changed ownership (ticket #210).

   nginx doesn't allow the same shared memory zone to be used for different
   purposes, but failed to check this on reconfiguration.  If a shared memory
   zone was used for another purpose in the new configuration, nginx attempted
   to reuse it and crashed.

Fixed failure to start cache manager and cache loader processes
if there were more than 512 listening sockets in configuration.

Core: the "auto" parameter of the "worker_processes" directive.

The parameter will set the number of worker processes to the
autodetected number of available CPU cores.

Resolver: cached addresses are returned with random rotation now.

This ensures balancing when working with dynamically resolved upstream
servers with multiple addresses.

Based on patch by Anton Jouline.

*) Made sure to initialize the entire ngx_file_t structure.
   Found by Coverity.

*) Correct plural form for "path" in the whole source base.

*) Removed conditional compilation from waitpid() error test.

   There are reports that call to a signal handler for an exited process
   despite waitpid() already called for the process may happen on Linux
   as well.

*) Style, parentheses instead of braces in misc/GNUMakefile.

The "include" directive should be able to include multiple files if
given a filename mask.  Fixed this to work for "include" directives
inside the "map" or "types" blocks.  The "include" directive inside
the "geo" block is still not fixed.

*) Resolver: fixed possible memory leak in ngx_resolver_create().

*) Explicitly ignore returned value from unlink() in ngx_open_tempfile().

*) Explicitly ignore returned value from close() in ngx_event_core_init_conf().

*) Added three missing checks for NULL after ngx_array_push() calls.

*) Crypt: fixed handling of corrupted SSHA entries in password file.

*) Mark logically dead code with corresponding comment.

Found by / prodded by Coverity.

Ensure that the path supplied always ends with a `/' except when empty.
An empty value now corresponds to the current directory instead of `/'.