Fix tests to always expect double quotes for attributes.

lib/python/TAL/test/output/test02.html

 <biztalk_1 xmlns="urn:schemas-biztalk-org:biztalk:biztalk_1">
 
-<foo:header xmlns:foo="whomping-willow" plain="guido" quote='"' apostrophe="'" both="&quot;'" lt="&lt;" gt="&gt;" amp="&amp;" foo="">
+<foo:header xmlns:foo="whomping-willow" plain="guido" quote="&quot;" apostrophe="'" both="&quot;'" lt="&lt;" gt="&gt;" amp="&amp;" foo="">
 	<manifest>
 		<document>
 			<name>sample1</name>

lib/python/TAL/test/output/test02.xml

 <?xml version="1.0" ?>
 <biztalk_1 xmlns="urn:schemas-biztalk-org:biztalk:biztalk_1">
 
-<foo:header xmlns:foo="whomping-willow" plain="guido" quote='"' apostrophe="'" both="&quot;'" lt="&lt;" gt="&gt;" amp="&amp;" foo="">
+<foo:header xmlns:foo="whomping-willow" plain="guido" quote="&quot;" apostrophe="'" both="&quot;'" lt="&lt;" gt="&gt;" amp="&amp;" foo="">
 	<manifest>
 		<document>
 			<name>sample1</name>

lib/python/TAL/test/test_htmltalparser.py

@@ -106,7 +106,7 @@ class HTMLTALParserTestCases(TestCaseBase):
             ('rawtext', '<a b="&amp;&gt;&lt;&quot;\'"></a>'),
             ])
         self._run_check("""<a b='\"'>""", [
-            ('rawtext', "<a b='\"'></a>"),
+            ('rawtext', '<a b="&quot;"></a>'),
             ])
         self._run_check("""<a b='&'>""", [
             ('rawtext', '<a b="&amp;"></a>'),

lib/python/TAL/tests/output/test02.html

 <biztalk_1 xmlns="urn:schemas-biztalk-org:biztalk:biztalk_1">
 
-<foo:header xmlns:foo="whomping-willow" plain="guido" quote='"' apostrophe="'" both="&quot;'" lt="&lt;" gt="&gt;" amp="&amp;" foo="">
+<foo:header xmlns:foo="whomping-willow" plain="guido" quote="&quot;" apostrophe="'" both="&quot;'" lt="&lt;" gt="&gt;" amp="&amp;" foo="">
 	<manifest>
 		<document>
 			<name>sample1</name>

lib/python/TAL/tests/output/test02.xml

 <?xml version="1.0" ?>
 <biztalk_1 xmlns="urn:schemas-biztalk-org:biztalk:biztalk_1">
 
-<foo:header xmlns:foo="whomping-willow" plain="guido" quote='"' apostrophe="'" both="&quot;'" lt="&lt;" gt="&gt;" amp="&amp;" foo="">
+<foo:header xmlns:foo="whomping-willow" plain="guido" quote="&quot;" apostrophe="'" both="&quot;'" lt="&lt;" gt="&gt;" amp="&amp;" foo="">
 	<manifest>
 		<document>
 			<name>sample1</name>

lib/python/TAL/tests/test_htmltalparser.py

@@ -106,7 +106,7 @@ class HTMLTALParserTestCases(TestCaseBase):
             ('rawtext', '<a b="&amp;&gt;&lt;&quot;\'"></a>'),
             ])
         self._run_check("""<a b='\"'>""", [
-            ('rawtext', "<a b='\"'></a>"),
+            ('rawtext', '<a b="&quot;"></a>'),
             ])
         self._run_check("""<a b='&'>""", [
             ('rawtext', '<a b="&amp;"></a>'),