SCUMM: Maniac V0: Add support for D64 Demo Disk, Cleanup duplicate 'Talk...

Located the V0 Demo this morning (its both interactive and playable),

Took some work, but its now working fine... The md5 stuff probably has been done incorrectly :)

The 'V0 Talk Array' has been cleaned it, as we had duplicated at some point

I'm not 100% sure if the data in the array 'maniacDemoResourcesPerFile', is correct... 
To get it where it is, i added a room array to the 'extractindex' function (file.cpp), and counted each script/costume/sound that loaded using its room number... but some of the rooms seemed to come up short, and caused a crash when a resource attempted to load.. those rooms where manually increased to fix it...

I've chucked it on my website, so it can be fetched & added to the demo download page 
[Maniac Mansion C64 Demo](http://legacymode.com/maniacdemo.zip)

![boot_demo](https://cloud.githubusercontent.com/assets/1327406/5330508/24f0e530-7e4d-11e4-9199-b53f4d015d3e.png)