THRIFT-1943 docstrings for enum values are ignored

Patch: Jens Geyer
THRIFT-1945: C#: sbyte breaks TestClient

Patch: Carl Yeksigian
THRIFT-1809 NEWS, DISCLAIMER and CONTRIBUTORS
fix make dist
THRIFT-1906 ocaml: add tutorial example to parallel that for other languages
Patch: Chet Murthy