Revert "Fix typo; fit version line in button."

This reverts commit 85d0497809984dd5e4f569c3302161b338ea0fab.
Revert "Add notice of Windows Vista requirement"

This reverts commit dc1562955d55655a8723b01f9284e778dd782ae5.

With the bitmap formatting fixed the installer can reasonably still work
with XP.
Add build 1463 news entry