* modified schedule_dataflow_rewrite.cc to fix losing tensor problem
* modified schedule_dataflow_rewrite.cc for lint scan
* modified schedule_dataflow_rewrite.cc for lint scan
* using tensor's value_index to index output of stage op
* repare address offset for different kinds of dtype
* bc
* aaa
* aaaaa
* repare address for different dtypes
* remove nonsense files
* add whitespace of line 581
* use base alloc elem_type
* enhance the testcast of basic buffer is 64bits,32bits,16bits,8bits
* use extends[0]->type() as dtype of offset
* clear program writes
* enhance inject_copy_intin to support of pragma stmt with no loops
* fix cpplint errors
* fix cpplint error of !
* enhance detectLinearEquation to support with no loop vars
* fix cpplint errors
