Switch from cElementTree to ElementTree.

The xml.etree.cElementTree module will be removed in Python 3.9. Since
Python 3.3 the xml.etree.cElementTree module has been deprecated, the
xml.etree.ElementTree module uses a fast implementation whenever
available.

Builds using Python 2.7 can still work but with the slower
implementation.

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Acked-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5349>

src/amd/vulkan/radv_entrypoints_gen.py

@@ -26,7 +26,7 @@ import argparse
 import functools
 import math
 import os
-import xml.etree.cElementTree as et
+import xml.etree.ElementTree as et
 
 from collections import OrderedDict, namedtuple
 from mako.template import Template

src/freedreno/vulkan/tu_entrypoints_gen.py

@@ -27,7 +27,7 @@ import copy
 import functools
 import math
 import os
-import xml.etree.cElementTree as et
+import xml.etree.ElementTree as et
 
 from collections import OrderedDict, namedtuple
 from mako.template import Template

src/intel/genxml/gen_sort_tags.py

@@ -28,7 +28,7 @@ from collections import OrderedDict
 import os
 import pathlib
 import re
-import xml.etree.cElementTree as et
+import xml.etree.ElementTree as et
 
 def get_filename(element):
     return element.attrib['filename']

src/intel/genxml/gen_zipped_file.py

@@ -25,7 +25,7 @@
 from __future__ import print_function
 import sys
 import zlib
-import xml.etree.cElementTree as et
+import xml.etree.ElementTree as et
 
 def main():
     if len(sys.argv) < 2:

src/intel/perf/gen_perf.py

@@ -24,7 +24,7 @@ import os
 import sys
 import textwrap
 
-import xml.etree.cElementTree as et
+import xml.etree.ElementTree as et
 
 hashed_funcs = {}
 

src/intel/vulkan/anv_entrypoints_gen.py

@@ -25,7 +25,7 @@
 import argparse
 import math
 import os
-import xml.etree.cElementTree as et
+import xml.etree.ElementTree as et
 
 from collections import OrderedDict, namedtuple
 from mako.template import Template

src/mapi/new/genCommon.py

@@ -28,7 +28,7 @@
 import collections
 import re
 import sys
-import xml.etree.cElementTree as etree
+import xml.etree.ElementTree as etree
 
 import os
 GLAPI = os.path.join(os.path.dirname(__file__), "..", "glapi", "gen")

src/mapi/new/gen_gldispatch_mapi.py

@@ -33,7 +33,7 @@ Generates the glapi_mapi_tmp.h header file from Khronos's XML file.
 """
 
 import sys
-import xml.etree.cElementTree as etree
+import xml.etree.ElementTree as etree
 
 import genCommon
 

src/vulkan/util/gen_enum_to_str.py

@@ -25,7 +25,7 @@ from __future__ import print_function
 import argparse
 import os
 import textwrap
-import xml.etree.cElementTree as et
+import xml.etree.ElementTree as et
 
 from mako.template import Template
 

src/vulkan/util/vk_extensions.py

@@ -1,7 +1,7 @@
 import argparse
 import copy
 import re
-import xml.etree.cElementTree as et
+import xml.etree.ElementTree as et
 
 def _bool_to_c_expr(b):
     if b is True:

src/vulkan/util/vk_extensions_gen.py

@@ -24,7 +24,7 @@ COPYRIGHT = """\
  */
 """
 
-import xml.etree.cElementTree as et
+import xml.etree.ElementTree as et
 
 from mako.template import Template