[2.7] bpo-30380: Fix Sphinx 1.6.1 warnings. (GH-1613) (#1616)

* Use explicit numbering for footnotes referred by explicit number.
* Fix literal strings formatting in howto/urllib2.rst.
* Add `:noindex:` to duplicated definition of list.
* Update susp-ignored.csv for reference/expressions.rst.
(cherry picked from commit d97b7dc9)

Doc/howto/urllib2.rst

@@ -34,8 +34,8 @@ handling common situations - like basic authentication, cookies, proxies and so
 on. These are provided by objects called handlers and openers.
 
 urllib2 supports fetching URLs for many "URL schemes" (identified by the string
-before the ":" in URL - for example "ftp" is the URL scheme of
-"ftp://python.org/") using their associated network protocols (e.g. FTP, HTTP).
+before the ``":"`` in URL - for example ``"ftp"`` is the URL scheme of
+``"ftp://python.org/"``) using their associated network protocols (e.g. FTP, HTTP).
 This tutorial focuses on the most common case, HTTP.
 
 For straightforward situations *urlopen* is very easy to use. But as soon as you
@@ -498,10 +498,10 @@ than the URL you pass to .add_password() will also match. ::
 
 ``top_level_url`` is in fact *either* a full URL (including the 'http:' scheme
 component and the hostname and optionally the port number)
-e.g. "http://example.com/" *or* an "authority" (i.e. the hostname,
-optionally including the port number) e.g. "example.com" or "example.com:8080"
+e.g. ``"http://example.com/"`` *or* an "authority" (i.e. the hostname,
+optionally including the port number) e.g. ``"example.com"`` or ``"example.com:8080"``
 (the latter example includes a port number).  The authority, if present, must
-NOT contain the "userinfo" component - for example "joe:password@example.com" is
+NOT contain the "userinfo" component - for example ``"joe:password@example.com"`` is
 not correct.
 
 

Doc/library/functions.rst

@@ -741,6 +741,7 @@ section.
 
 
 .. class:: list([iterable])
+   :noindex:
 
    Return a list whose items are the same and in the same order as *iterable*'s
    items.  *iterable* may be either a sequence, a container that supports

Doc/library/pyexpat.rst

@@ -911,7 +911,7 @@ The ``errors`` object has the following attributes:
 
 .. rubric:: Footnotes
 
-.. [#] The encoding string included in XML output should conform to the
+.. [1] The encoding string included in XML output should conform to the
    appropriate standards. For example, "UTF-8" is valid, but "UTF8" is
    not. See https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-EncodingDecl
    and https://www.iana.org/assignments/character-sets/character-sets.xhtml.

Doc/library/xml.dom.minidom.rst

@@ -273,7 +273,7 @@ utility to most DOM users.
 
 .. rubric:: Footnotes
 
-.. [#] The encoding string included in XML output should conform to the
+.. [1] The encoding string included in XML output should conform to the
    appropriate standards. For example, "UTF-8" is valid, but "UTF8" is
    not. See https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-EncodingDecl
    and https://www.iana.org/assignments/character-sets/character-sets.xhtml.

Doc/library/xml.etree.elementtree.rst

@@ -1031,7 +1031,7 @@ This is an example of counting the maximum depth of an XML file::
 
 .. rubric:: Footnotes
 
-.. [#] The encoding string included in XML output should conform to the
+.. [1] The encoding string included in XML output should conform to the
    appropriate standards.  For example, "UTF-8" is valid, but "UTF8" is
    not.  See https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-EncodingDecl
    and https://www.iana.org/assignments/character-sets/character-sets.xhtml.

Doc/tools/susp-ignored.csv

@@ -46,7 +46,7 @@ howto/pyporting,,::,Programming Language :: Python :: 2
 howto/pyporting,,::,Programming Language :: Python :: 3
 howto/regex,,::,
 howto/regex,,:foo,(?:foo)
-howto/urllib2,,:password,"for example ""joe:password@example.com"""
+howto/urllib2,,:password,"""joe:password@example.com"""
 library/audioop,,:ipos,"# factor = audioop.findfactor(in_test[ipos*2:ipos*2+len(out_test)],"
 library/bisect,,:hi,all(val >= x for val in a[i:hi])
 library/bisect,,:hi,all(val > x for val in a[i:hi])
@@ -152,7 +152,7 @@ reference/datamodel,,:step,a[i:j:step]
 reference/datamodel,,:max,
 reference/expressions,,:index,x[index:index]
 reference/expressions,,`,`expressions...`
-reference/expressions,,`,"""`"""
+reference/expressions,350,`,`
 reference/grammar,,`,'`' testlist1 '`'
 reference/lexical_analysis,,:fileencoding,# vim:fileencoding=<encoding-name>
 reference/lexical_analysis,,`,",       :       .       `       =       ;"