Log Message:
Long awaited update to vim 7.3.

The most notable additions since 7.2:
- Persistent undo and undo for reload
- Blowfish encryption, encryption of the swap file
- Conceal text
- Lua interface
- Python 3 interface

Once you have installed Vim 7.3 you can find all the details about the
changes since Vim 7.2 with:
        :help version-7.3