configitems: fixup default value of annotate config option

It turned out that configbool is used for most of them so the registered
default value was wrong.

mercurial/configitems.py

@@ -104,34 +104,34 b" coreconfigitem('alias', '.*',"
     generic=True,
 )
 coreconfigitem('annotate', 'nodates',
-    default=None,
+    default=False,
 )
 coreconfigitem('annotate', 'showfunc',
-    default=None,
+    default=False,
 )
 coreconfigitem('annotate', 'unified',
     default=None,
 )
 coreconfigitem('annotate', 'git',
-    default=None,
+    default=False,
 )
 coreconfigitem('annotate', 'ignorews',
-    default=None,
+    default=False,
 )
 coreconfigitem('annotate', 'ignorewsamount',
-    default=None,
+    default=False,
 )
 coreconfigitem('annotate', 'ignoreblanklines',
-    default=None,
+    default=False,
 )
 coreconfigitem('annotate', 'ignorewseol',
-    default=None,
+    default=False,
 )
 coreconfigitem('annotate', 'nobinary',
-    default=None,
+    default=False,
 )
 coreconfigitem('annotate', 'noprefix',
-    default=None,
+    default=False,
 )
 coreconfigitem('auth', 'cookiefile',
     default=None,