updated docs to reflect the change in commit 382c7201.
bumped version to 0.9.6.
optimize: we no longer clear "ctx->user_co_ctx" in ngx_http_lua_reset_ctx.
added stronger assertions to the stream-typed cosocket implementation.
use lua_pushliteral instead of lua_pushlstring
Merge pull request #351 from cubicdaiya/issues/use_luapushliteral

refactor: use lua_pushliteral instead of lua_pushlstring in ngx_http_lua_ngx_get_phase.
refactor: improved the error handling and logging in the Lua code loader and closure factory.
Merge branch 'master' of github.com:chaoslawful/lua-nginx-module
made a test case less likely to fail on slow machines.
made a test case less likely to fail on slow machines.
suppressed a false positive in libdl.
bugfix: when lua_code_cache was off, cosocket:setkeepalive() might lead to segmentation faults. thanks Kelvin Peng for the report.
refactor: we no longer call ngx_pfree() in our own pcre_free hook.
added assertions for the pcre pool management.
bumped version to 0.9.7.
Update ngx_http_lua_string.c
Merge pull request #355 from lhmwzy/master

Update ngx_http_lua_string.c to fix a typo in an error message.
Revert "added assertions for the pcre pool management."

This reverts commit 5c27180048c0910f724e16f77446ef79795c76cf.
doc: now we have tested with nginx 1.5.12; also put the 0.9.7 release date.
use ngx_str_null