[binutils-gdb] Use gdbpy_enter in python.c

[sergiodj+buildbot at sergiodj dot net]

*** TEST RESULTS FOR COMMIT 60e600ec691255536ae53e365d0410ecf79bdea2 ***

Author: Tom Tromey <tom@tromey.com>
Branch: master
Commit: 60e600ec691255536ae53e365d0410ecf79bdea2

Use gdbpy_enter in python.c

Change the simple parts of python.c to use gdbpy_enter.

2017-01-10  Tom Tromey  <tom@tromey.com>

	* python/python.c (gdbpy_eval_from_control_command)
	(gdbpy_source_script, gdbpy_run_events)
	(gdbpy_source_objfile_script, gdbpy_execute_objfile_script)
	(gdbpy_free_type_printers, gdbpy_finish_initialization): Use
	gdbpy_enter.