QPID-5079: Deal better with compiling on 32 bit architectures
- The API check now varies the expansion it uses for uint64_t/int64_t/size_t
  by getting the compiler to tell it the actual type.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1518408 13f79535-47bb-0310-9956-ffa450edef68