Not use jemalloc on macosx, See Issue #99
fix makefile for better platform support
Merge pull request #100 from cloudwu/notusejemalloc

fix makefile for better platform support
remove malloc hook when disable jemalloc
preload support
support abs path for LUA_CLIB_PATH
remove service_lua.h
use pthread_getspecific instead of __thread
add snax command to debug console
debug command reload and timing removed
rebase v0.1.1 and remove malloc_inithook