Add test for int64 id fields.

Expects one failure.
unmarshalling of int64 IDs, #29
Merge pull request #32 from univedo/int64ids

Int64ids
Next fail for ints...
Add all missing int* uint* types to unmarshal
Cleaner code for reflection int magic
Add overflow checks in int conversion
Update int tests to be one context only
Merge pull request #33 from univedo/int64ids

All Int* and Uint* types are now working
Merge branch 'master' into string_error