Add support to switch tsc version at testing
Add tsc version 0.9.5 beta

from typescript repo origin/release-0.9.5/HEAD (f22a9d2ba03c102b096e9f8c4157a9a066c004d9)
Merge pull request #1315 from vvakame/add-support-tsc-switching

Add support tsc switching to runner.ts