Errors on building and running eunit and eqc in ubf

[tatsuya6502]

As of Hibari v0.3.0-dev, eunit and eqc tests for ubf library will fail with errors, for example:

% make eqc-thrift
...

Error in contract:{undef,
                      [{types_plugin,contract_type,[contract_res],[]},
                       {contract_parser,'-pass2/2-lc$^1/1-1-',2,
                           [{file,"src/contract_parser.erl"},{line,340}]},
                       {contract_parser,'-pass2/2-lc$^0/1-0-',1,
                           [{file,"src/contract_parser.erl"},{line,340}]},
                       {contract_parser,pass2,2,
                           [{file,"src/contract_parser.erl"},{line,323}]},
                       {contract_parser,tags,2,
                           [{file,"src/contract_parser.erl"},{line,223}]},
                       {contract_parser,parse_transform,2,
                           [{file,"src/contract_parser.erl"},{line,54}]},
                       {compile,'-foldl_transform/2-anonymous-2-',2,
                           [{file,"compile.erl"},{line,847}]},
                       {compile,foldl_transform,2,
                           [{file,"compile.erl"},{line,849}]}]}
/home/tatsuya/workhub/dev/hibari/hibari/lib/ubf/test/eunit/stateful_plugin.erl:none: error in parse transform 'contract_parser': {{undef,
                                              [{types_plugin,contract_type,
                                                [contract_res],
                                                []},
                                               {contract_parser,
                                                '-pass2/2-lc$^1/1-1-',2,
                                                [{file,
                                                  "src/contract_parser.erl"},
                                                 {line,340}]},
                                               {contract_parser,

When upgrading ubf and ubf-thrift libraries to the latest (#7) for Hibari v0.3.1, make sure those eunit and eqc cases to start to run again.