misc fixes

- bump upstream projects
- fix windows to rspec against the appbundle'd chef
- FORCE_FFI_YAJL=ext before rspec (fixes 3 hour solaris tests and will
  catch platforms where the c-ext is broken)
- roll back windows ruby to 2.0.0 :(
Merge pull request #258 from opscode/lcg/force-ffi-yajl-c-ext

misc fixes