Catch illegal boolean values in hgrc nicely.

With hg 0.9.3 the section and parameter name wasn't printed,
with hg 0.9.4 there was a traceback for ValueError.

mercurial/ui.py

@@ -237,7 +237,7 b' class ui(object):'
             try:
                 func = getattr(cdata, funcname)
                 return func(section, name)
-            except ConfigParser.InterpolationError, inst:
+            except (ConfigParser.InterpolationError, ValueError), inst:
                 msg = _("Error in configuration section [%s] "
                         "parameter '%s':\n%s") % (section, name, inst)
                 if abort:

tests/test-ui-config

@@ -34,8 +34,8 b" print repr(testui.config('values', 'unkn"
 print "---"
 try:
     print repr(testui.configbool('values', 'string'))
-except ValueError, why:
-    print why
+except util.Abort, inst:
+    print inst
 print repr(testui.configbool('values', 'bool1'))
 print repr(testui.configbool('values', 'bool2'))
 print repr(testui.configbool('values', 'bool2', True))

tests/test-ui-config.out

@@ -8,6 +8,7 b' Error in configuration section [interpol'
 'false'
 None
 ---
+Error in configuration section [values] parameter 'string':
 Not a boolean: string value
 True
 False