*/py-{gdbm,sqlite3,tkinter}: switch from distutils to setuptools

For python modules which come from python itself, switch from
distutils (no longer present in python 3.12) to setuptools, fixing
these mudules for python 3.12.

PR:		268283
Approved by:	vishwin (python@)

databases/py-gdbm/files/setup3.py

@@ -3,17 +3,19 @@
 #       python setup.py install
 #
 
+import os
+import sys
+
 try:
-    import distutils
-    from distutils import sysconfig
-    from distutils.command.install import install
-    from distutils.core import setup, Extension
+    import setuptools
+    from setuptools.command.install import install
+    from setuptools import setup, Extension
 except:
     raise SystemExit("Distutils problem")
 
 install.sub_commands = [x for x in install.sub_commands if 'egg' not in x[0]]
 
-prefix = sysconfig.PREFIX
+prefix = os.path.normpath(sys.prefix)
 inc_dirs = [prefix + "/include"]
 lib_dirs = [prefix + "/lib"]
 libs = ["gdbm"]

databases/py-sqlite3/files/setup3.py

@@ -3,19 +3,20 @@
 #       python setup.py install
 #
 
+import os
 import platform
+import sys
 
 try:
-    import distutils
-    from distutils import sysconfig
-    from distutils.command.install import install
-    from distutils.core import setup, Extension
+    import setuptools
+    from setuptools.command.install import install
+    from setuptools import setup, Extension
 except:
-    raise SystemExit("Distutils problem")
+    raise SystemExit("Setuptools problem")
 
 install.sub_commands = [x for x in install.sub_commands if 'egg' not in x[0]]
 
-prefix = sysconfig.PREFIX
+prefix = os.path.normpath(sys.prefix)
 inc_dirs = [prefix + "/include", "Modules/_sqlite"]
 lib_dirs = [prefix + "/lib"]
 libs = ["sqlite3"]

x11-toolkits/py-tkinter/files/setup3.py

@@ -3,20 +3,20 @@
 #       python setup.py install
 #
 
-import os, string
+import os
+import sys
 
 try:
-    import distutils
-    from distutils import sysconfig
-    from distutils.command.install import install
-    from distutils.core import setup, Extension
+    import setuptools
+    from setuptools.command.install import install
+    from setuptools import setup, Extension
 except:
     raise SystemExit("Distutils problem")
 
 install.sub_commands = [x for x in install.sub_commands if 'egg' not in x[0]]
 
 tkversion = "%%TK_VER%%"
-prefix = sysconfig.PREFIX
+prefix = os.path.normpath(sys.prefix)
 # Python 1.5 doesn't have os.getenv()?
 x11base = os.environ['LOCALBASE'] or '/usr/X11R6'
 inc_dirs = [prefix + "/include",