krb5 commit [krb5-1.17]: Update doxygen-RST bridge to Python 3

https://github.com/krb5/krb5/commit/e0c2b2b91cdae0b607862f7813508e990073cca8
commit e0c2b2b91cdae0b607862f7813508e990073cca8
Author: Greg Hudson <[email protected]>
Date:   Thu Jan 17 12:51:59 2019 -0500

    Update doxygen-RST bridge to Python 3
    
    Also remove a debugging print from DocModel.__repr__.
    
    (cherry picked from commit 95830231758de259abbbccedbac01613f578768a)
    
    ticket: 8774
    version_fixed: 1.17.1

 doc/tools/docmodel.py          |    5 ++---
 doc/tools/doxybuilder_funcs.py |    4 ++--
 doc/tools/doxybuilder_types.py |    4 ++--
 src/doc/Makefile.in            |    2 +-
 4 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/doc/tools/docmodel.py b/doc/tools/docmodel.py
index ef4cd76..e5d4d11 100644
--- a/doc/tools/docmodel.py
+++ b/doc/tools/docmodel.py
@@ -201,7 +201,6 @@ class DocModel(object):
 
     def __repr__(self):
         obj = getattr(self,self.category)
-        print type(obj)
         return str(obj)
 
     def signature(self):
@@ -236,8 +235,8 @@ class DocModelTest(DocModel):
         self.test_save()
 
     def test_print(self):
-        print 'testing'
-        print self
+        print('testing')
+        print(self)
 
 
     def test_save(self):
diff --git a/doc/tools/doxybuilder_funcs.py b/doc/tools/doxybuilder_funcs.py
index bfcadfd..9a11977 100644
--- a/doc/tools/doxybuilder_funcs.py
+++ b/doc/tools/doxybuilder_funcs.py
@@ -93,7 +93,7 @@ class DocNode(object):
 
         return '\n'.join(result)
 
-class DoxyContenHandler(object, ContentHandler):
+class DoxyContenHandler(ContentHandler):
     def __init__(self, builder):
         self.builder = builder
         self.counters = defaultdict(int)
@@ -242,7 +242,7 @@ class DoxyFuncs(XML2AST):
                            'description': p_descr}
             parameters.append(param_descr)
         result = Function(**function_descr)
-        print >> self.tmp, result
+        print(result, file=self.tmp)
 
         return function_descr
 
diff --git a/doc/tools/doxybuilder_types.py b/doc/tools/doxybuilder_types.py
index 24e0a57..947971a 100644
--- a/doc/tools/doxybuilder_types.py
+++ b/doc/tools/doxybuilder_types.py
@@ -358,7 +358,7 @@ class DoxyBuilderTypes(DoxyTypes):
         result = self.run(filename, include=['typedef'])
         target_dir = '%s/types' % (self.target_dir)
         if not os.path.exists(target_dir):
-            os.makedirs(target_dir, 0755)
+            os.makedirs(target_dir, 0o755)
         for t in result:
             obj = DocModel(**t)
             self.save(obj, self.templates, target_dir)
@@ -369,7 +369,7 @@ class DoxyBuilderTypes(DoxyTypes):
         result = self.run(filename, include=['define'])
         target_dir = '%s/macros' % (self.target_dir)
         if not os.path.exists(target_dir):
-            os.makedirs(target_dir, 0755)
+            os.makedirs(target_dir, 0o755)
         for t in result:
             obj = DocModel(**t)
             tmpl = {'composite': 'define_document.tmpl'}
diff --git a/src/doc/Makefile.in b/src/doc/Makefile.in
index 1fb5fea..d635bff 100644
--- a/src/doc/Makefile.in
+++ b/src/doc/Makefile.in
@@ -48,7 +48,7 @@ html: composite
 
 # Dummy target for use in an unconfigured source tree.
 htmlsrc:
-	$(MAKE) -f Makefile.in srcdir=. top_srcdir=.. PYTHON=python html clean
+	$(MAKE) -f Makefile.in srcdir=. top_srcdir=.. PYTHON=python3 html clean
 
 # Create HTML documentation in html_subst suitable for
 # installation by an OS package, with substitutions for configured