1. Support Pal Api V3 in stub_enclave.
2. Achieve stub_enclave based on sgxsdk.
Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>
Signed-off-by: Jia Zhang <zhang.jia@linux.alibaba.com>

This rule enables building package useable for the running system.
Signed-off-by: Nshirong <shirong@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

- Add global `make rpm` for building rpms of rune and shim.
- Add rpm specs at rune/dist/centos and shim/dist/centos.
Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>
Signed-off-by: NChunmei Xu <xuchunmei@linux.alibaba.com>
Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>
Signed-off-by: NZhiguang Jia <Zhiguang.Jia@linux.alibaba.com>

1. add global Makefile for all components.
2. add make uninstall for rune/Makefile.
Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>