Different types with the same name should cause Duplicate typename error

[hit9]

E.g. the following thrift should cause duplicate typename error

struct foo {}
enum foo {}

But this wasn't handled in thriftpy.

[hit9]

excludes namespace, includes, const, all other types: enum, struct, union, exception, service, should use the same namespace, that means they cannot use the same name with different types.

[hit9]

New thrift parser model thrift should contains:

includes
constants
namespaces
ttypes

[hit9]

Also the field names should be independent in a srruct/function.

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And deprecate union support (What data structure in py should I use for union..

[hit9]

Will be fixed in #80

[hit9]

Closed via #80 .