enabled actual compression in wheel files
fixed cp35322

value of __name__ is set to __main__ when -c parameter is used
simplified test invocation
relaxed ctype DWORD argument conversion to accept negative values

fixed cp35326
fixed windows detection in pip/log and colorama
added formal test for cp35326
added partial support for gzip header and header autodetection
implemented gzip header state machine
removed memoryview
added missing test file for zlib
removed debug print
simplified gzip header removal