On demand loading is in

[Zack Rusin]

Hey,

Jose and I have been working on a new way of loading traces - on demand, 
instead of loading the entire model into memory at once. It's a shovel full of 
magic - doing random seeking within huge compressed files. I just merged that 
branch.

This means that the gui is now usable with multi GB files. I have here a 1.1 GB 
trace file and loading it takes about 20MB. Obviously the on-demand-loading 
requires a snappy compressed trace file, zlib traces are loaded like they used 
to. Please give it a spin an let us know if you'll find any bugs.

z