python/cpython

markshannon bpo-39320 : Handle unpacking of **values in compiler (GH-18141 )

* Add DICT_UPDATE and DICT_MERGE bytecodes. Use them for ** unpacking.

* Remove BUILD_MAP_UNPACK and BUILD_MAP_UNPACK_WITH_CALL, as they are now unused.

* Update magic number for ** unpacking opcodes.

* Update dis.rst to incorporate new bytecodes.

* Add blurb entry.

Latest commit 8a4cd70

Jan 27, 2020

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	cpython
	internal
	Python-ast.h
	Python.h
	abstract.h
	asdl.h
	ast.h
	bitset.h
	bltinmodule.h
	boolobject.h
	bytearrayobject.h
	bytes_methods.h
	bytesobject.h
	cellobject.h
	ceval.h
	classobject.h
	code.h
	codecs.h
	compile.h
	complexobject.h
	context.h
	datetime.h
	descrobject.h
	dictobject.h
	dtoa.h
	dynamic_annotations.h
	enumobject.h
	errcode.h
	eval.h
	exports.h
	fileobject.h
	fileutils.h
	floatobject.h
	frameobject.h
	funcobject.h
	genobject.h
	graminit.h
	grammar.h
	import.h
	interpreteridobject.h
	intrcheck.h
	iterobject.h
	listobject.h
	longintrepr.h
	longobject.h
	marshal.h
	memoryobject.h
	methodobject.h
	modsupport.h
	moduleobject.h
	namespaceobject.h
	node.h
	object.h
	objimpl.h
	odictobject.h
	opcode.h
	osdefs.h
	osmodule.h
	parsetok.h
	patchlevel.h
	picklebufobject.h
	py_curses.h
	pyarena.h
	pycapsule.h
	pyctype.h
	pydebug.h
	pydtrace.d
	pydtrace.h
	pyerrors.h
	pyexpat.h
	pyfpe.h
	pyhash.h
	pylifecycle.h
	pymacconfig.h
	pymacro.h
	pymath.h
	pymem.h
	pyport.h
	pystate.h
	pystrcmp.h
	pystrhex.h
	pystrtod.h
	pythonrun.h
	pythread.h
	pytime.h
	rangeobject.h
	setobject.h
	sliceobject.h
	structmember.h
	structseq.h
	symtable.h
	sysmodule.h
	token.h
	traceback.h
	tracemalloc.h
	tupleobject.h
	typeslots.h
	ucnhash.h
	unicodeobject.h
	warnings.h
	weakrefobject.h

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