THRIFT-225. java/cpp: Handle non-i32 integer constants properly

THRIFT-225. java/cpp: Handle non-i32 integer constants properly

Java generates a warning when converting from an integer constant
to a byte or short without an explicit cast.  This change adds a
cast to byte and short literals in Java.

Both Java and C++ fail to compile integer literals larger than 2^31
unless they are decorated with "L" (for Java) or "LL" (for g++).
This change adds the appropriate decorations.

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@727130 13f79535-47bb-0310-9956-ffa450edef68