#64 installer upgrade

[Marisa DeMeglio]

AMIS installer ideas:
- grab AMIS version from amis.exe and auto-insert in
setup exe name and elsewhere
- Language Packs should look at the version of AMIS.exe
- select and download additional language packs in the
main installer

[Marisa DeMeglio]

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Add to this: Vista and Windows 64 support.