gdb

gdb
	PR python/12367:
	* NEWS: Add item.
	* python/python.c (GdbMethods): Add "newest_frame" method.
	* python/python-internal.h (gdbpy_newest_frame): Declare.
	* python/py-frame.c (gdbpy_newest_frame): New function.
gdb/doc
	* gdb.texinfo (Frames In Python): Document gdb.newest_thread.
gdb/testsuite
	* gdb.python/py-frame.exp: Test gdb.newest_frame.