"port outdated" broken in trunk

[Ryan Schmidt]

In trunk @29497 "port outdated" returns the list of outdated ports:

$ port outdated
The following installed ports are outdated:
fontconfig                     2.4.2_0 < 2.4.2_1
lighttpd                       1.4.15_0 < 1.4.18_0
openssh                        4.7p1_0 < 4.7p1_1
p5-compress-zlib               2.006_0 < 2.007_0
wxWidgets                      2.8.4_2 < 2.8.6_1
$

However in trunk @29502 "port outdated" finds nothing:

$ port outdated
None of the specified ports are outdated.
$

I can still query individual ports:

$ port outdated wxWidgets
The following installed ports are outdated:
wxWidgets                      2.8.4_2 < 2.8.6_1
$

Or all installed ports:

$ port outdated installed
The following installed ports are outdated:
fontconfig                     2.4.2_0 < 2.4.2_1
lighttpd                       1.4.15_0 < 1.4.18_0
openssh                        4.7p1_0 < 4.7p1_1
p5-compress-zlib               2.006_0 < 2.007_0
wxWidgets                      2.8.4_2 < 2.8.6_1
$

But is this change in behavior intentional?

There were a couple commits made on trunk between r29497 and r29502  
but they seemed to be related and were all made by eridius so that's  
as far as I felt like narrowing it down.