py3: make raise statement python3 compatible

In python3
	raise error, message
has been changed to
	raise error(message)

In additional to that nodes.SkipNode is changed to nodes.SkipNode() so that
it creates an instance directly.

doc/hgmanpage.py

@@ -415,7 +415,7 b' class Translator(nodes.NodeVisitor):'
         else:
             self._docinfo[name] = node.astext()
         self._docinfo_keys.append(name)
-        raise nodes.SkipNode
+        raise nodes.SkipNode()
 
     def depart_docinfo_item(self, node):
         pass
@@ -469,7 +469,7 b' class Translator(nodes.NodeVisitor):'
 
     def visit_citation_reference(self, node):
         self.body.append('['+node.astext()+']')
-        raise nodes.SkipNode
+        raise nodes.SkipNode()
 
     def visit_classifier(self, node):
         pass
@@ -489,7 +489,7 b' class Translator(nodes.NodeVisitor):'
     def visit_comment(self, node,
                       sub=re.compile('-(?=-)').sub):
         self.body.append(self.comment(node.astext()))
-        raise nodes.SkipNode
+        raise nodes.SkipNode()
 
     def visit_contact(self, node):
         self.visit_docinfo_item(node, 'contact')
@@ -643,7 +643,7 b' class Translator(nodes.NodeVisitor):'
             name_normalized = self._field_name.lower().replace(" ","_")
             self._docinfo_names[name_normalized] = self._field_name
             self.visit_docinfo_item(node, name_normalized)
-            raise nodes.SkipNode
+            raise nodes.SkipNode()
 
     def depart_field_body(self, node):
         pass
@@ -657,7 +657,7 b' class Translator(nodes.NodeVisitor):'
     def visit_field_name(self, node):
         if self._in_docinfo:
             self._field_name = node.astext()
-            raise nodes.SkipNode
+            raise nodes.SkipNode()
         else:
             self.body.append(self.defs['field_name'][0])
 
@@ -693,7 +693,7 b' class Translator(nodes.NodeVisitor):'
 
     def visit_footnote_reference(self, node):
         self.body.append('['+self.deunicode(node.astext())+']')
-        raise nodes.SkipNode
+        raise nodes.SkipNode()
 
     def depart_footnote_reference(self, node):
         pass
@@ -705,7 +705,7 b' class Translator(nodes.NodeVisitor):'
         pass
 
     def visit_header(self, node):
-        raise NotImplementedError, node.astext()
+        raise NotImplementedError(node.astext())
 
     def depart_header(self, node):
         pass
@@ -742,7 +742,7 b' class Translator(nodes.NodeVisitor):'
         if 'uri' in node.attributes:
             text.append(node.attributes['uri'])
         self.body.append('[image: %s]\n' % ('/'.join(text)))
-        raise nodes.SkipNode
+        raise nodes.SkipNode()
 
     def visit_important(self, node):
         self.visit_admonition(node, 'important')
@@ -753,7 +753,7 b' class Translator(nodes.NodeVisitor):'
         # footnote and citation
         if (isinstance(node.parent, nodes.footnote)
             or isinstance(node.parent, nodes.citation)):
-            raise nodes.SkipNode
+            raise nodes.SkipNode()
         self.document.reporter.warning('"unsupported "label"',
                 base_node=node)
         self.body.append('[')
@@ -814,7 +814,7 b' class Translator(nodes.NodeVisitor):'
         self.body.append(self.defs['literal_block'][1])
 
     def visit_meta(self, node):
-        raise NotImplementedError, node.astext()
+        raise NotImplementedError(node.astext())
 
     def depart_meta(self, node):
         pass
@@ -924,7 +924,7 b' class Translator(nodes.NodeVisitor):'
         if node.get('format') == 'manpage':
             self.body.append(node.astext() + "\n")
         # Keep non-manpage raw text out of output:
-        raise nodes.SkipNode
+        raise nodes.SkipNode()
 
     def visit_reference(self, node):
         """E.g. link or email address."""
@@ -963,7 +963,7 b' class Translator(nodes.NodeVisitor):'
 
     def visit_substitution_definition(self, node):
         """Internal only."""
-        raise nodes.SkipNode
+        raise nodes.SkipNode()
 
     def visit_substitution_reference(self, node):
         self.document.reporter.warning('"substitution_reference" not supported',
@@ -1009,7 +1009,7 b' class Translator(nodes.NodeVisitor):'
 
     def visit_target(self, node):
         # targets are in-document hyper targets, without any use for man-pages.
-        raise nodes.SkipNode
+        raise nodes.SkipNode()
 
     def visit_tbody(self, node):
         pass
@@ -1053,7 +1053,7 b' class Translator(nodes.NodeVisitor):'
             self._docinfo['title'] = node.astext()
             # document title for .TH
             self._docinfo['title_upper'] = node.astext().upper()
-            raise nodes.SkipNode
+            raise nodes.SkipNode()
         elif self.section_level == 1:
             self.body.append('.SH ')
             for n in node.traverse(nodes.Text):