Issue #20151: The binascii module now uses Argument Clinic.
Issue #20376: Argument Clinic now escapes backslashes in docstrings.
Fixed converting errors in the binascii module (issue20151).

a2b_qp() now accepts keyword arguments.
All "ascii" parameters is renamed to "data" for consistancy with a2b_qp().
Issue #20133: The audioop module now uses Argument Clinic.
Issue #20193: The _bz2 module now uses Argument Clinic.
Fix grammar.
Fix grammar: merge with 3.3.
Issue #20193: The _lzma module now uses Argument Clinic.

LZMACompressor.__init__ is left not converted.