Fix Segmentation fault: gc_add_root with static thunk.
Test: Travis-CI find the #48 BUG with running regress test?
Added regress test for BUG #48 (fixed #48).
Add release note for 0.8.0.9.
Bump up version 0.8.0.10.
Merge branch 'arafura' into arafura-ci4osx