docs: mentioned my Perl Systemtap Toolkit.
bugfix: ngx-sample-bt: only croak on 0 backtrackes. thanks Sri Rao for reporting this issue.
fix a usage typo on ngx-backtrace
Merge pull request #5 from guanlan/master

Fix a usage typo on ngx-backtrace
docs: made it clear that ngx-sample-bt can work on any user process, not just nginx.
added more explanation.
docs: more explanation for ngx-accept-queue.
ngx-sample-lua-bt: minor coding style fixes. thanks Guanlan Dai for the patch.
feature: added new tool ngx-lua-conn-pools

This tool can dump the current details for all the ngx_lua cosocket
connection pools in any running worker processes. Thanks Guanlan Dai for
the patch.
bugfix: ngx-lua-conn-pools: cTValue was having issues with older versions of systemtap. switched to TValue instead.
ngx-shm: skip bad vars to suppress the read fault errors. thanks Dane Knecht for reporting it.
ngx-shm: fixed compatibility with nginx 1.4.x+. thanks Dane Knecht for reporting this issue.
ngx-shm: fixed the "shm zone blah is corrupted: pool != pool->addr" error for the case when nginx is HUP reloaded. thanks Dane Knecht for reporting it.
ngx-shm: skip bad vars only when the -n <zone> option is specified, because read fault is common after a fresh nginx reload.
docs: ngx-lua-conn-pools: fixed the output format.
ngx-lua-conn-pools: minor output format tweaks: put "avg" in the middle of "max" and "min".
bugfix: ngx-lua-bt: check stack wheter empty or not before exit
Merge pull request #7 from guanlan/lua-bt

bugfix: ngx-lua-bt: check stack whether empty or not before exit
ngx-lua-bt: fix a potential operator precedence issue.
Merge branch 'master' of github.com:agentzh/nginx-systemtap-toolkit