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
ngx-lua-bt: removed the support for children processes. always specify the -x option when calling stap.
ngx-lua-bt: fixed the module name for 3 @cast ops.
feature: ngx-sample-bt can now automatically ask stap to load debug symbols in all the DSO already loaded in the target user process.
ngx-sample-lua-bt: fixed some typos in the program outputs; also added support for automatic loaded DSO finding.
ngx-sample-lua-bt: pass -x <pid> to stap when there is only one process to probe.
feature: added new tool check-debug-info to check availability of debug info in a running process (included all the DSO loaded into it).
documented the check-debug-info tool.