upgraded LuaJIT to v2.1-20140419.
bumped version to 1.5.12.1rc3.
upgraded LuaJIT to v2.1-20140423.
build: updated links to reflect recent repos migration over the github "openresty" account.
upgraded ngx_redis2 to 0.11.
upgraded ngx_lua_upstream module to 0.02.
updated tests to reflect recent changes; also bumped version to 1.5.12.1.
upgraded nginx core to 1.7.0.
apply the slab_defrag patch to the nginx core by default.
updated the slab_defrag patch (for nginx) a bit.
updated the slab_defrag patch (for nginx) with better comments. thanks Shuxin for the suggestions.
fixed a bug in slab_defrag.patch for the nginx core that we may incorrectly access the padding area between the end of pool->pages and pool->start. thanks Shuxin Yang for the catch.
bugfix: our "prev_slab" field of ngx_slab_page_t could get out of sync in the slab_defrag patch for nginx. thanks Shuxin Yang for the catch.