Merge pull request apache#293 from apache/newer-compiler-11-26

compiler: support latest compiler

Merge pull request apache#257 from Zha0Chan/master

fix "write_vectored "caused segmentfault

Merge pull request apache#217 from sammyne/patch-sgx_tunittest

refactor(sgx_tunittest): remove the necessary 'std::panic' import for 'should_panic' macro

Merge pull request apache#205 from volcano0dr/master

Fix read/write buffer check. Thanks again @volcano0dr !

Fix local attestation code sample

Move build_helper to sgx_build_helper

Update readme and release_notes. v1.0.7

v1.0.6

Signed-off-by: Yu Ding <dingelish@gmail.com>

Add Readme for PCL code sample

Signed-off-by: Yu Ding <dingelish@gmail.com>

v1.0.4 release

Signed-off-by: Yu Ding <dingelish@gmail.com>