- Fixed bug in get_callable() that caused resolve() to put a string
in ResolverMatch.func.
- Made ResolverMatch.url_name match the actual url name (or None).
- Updated tests that used the string value in ResolverMatch.func, and
added regression tests for this bug.
- Corrected test urls whose dummy view paths caused failures (behavior
that was previously masked by this bug).
Fixed URL resolving in the case where an outer regex includes an inner
regex and both regexes use positional parameters instead of named
groups, causing the outer regex's parameters to override the inner
regex's.
Modified the regex url resolver so that it will concatenates and then
normalizes, instead of normalizing and then concatenating.
