This is the app version we're going to be using for Thunderbird 1.5 Beta 1.
We'll use 1.4.1 for Beta 2.
This change is necessary so software update recognizes the difference between beta 1, beta 2
and final when upgrading beta users to each release.
r=chase a=me/asa
git-svn-id: svn://10.0.0.236/branches/MOZILLA_1_8_BRANCH@179682 18797224-902f-48f8-a5cc-f745e15eee43