reformat_presets

This implements preset for the Reformat node for many of the most common film and digital camera values.  I also gave nice labels to match the format inside but it still shows the resolution on the node which is nice.

Yes you can do this with nuke.addFormat, but you can't nest them and when the list gets big it kind of gets annoying and goes off screen.  So this is just an alternative.

Install Instructions:
1. copy the file into your .nuke folder or anywhere in your NUKE_PATH 
2. in your init.py or menu.py put the following code:

import reformat_presets
reformat_presets.nodePresetReformat()

It uses Nuke 6.3's new node presets and will not work with older versions.  If you have additional camera values you would like added let me know.  There are still some missing ones that would be useful like weisscam and viper.  If you have these values offhand then post them in the comments and I will add them.

#just a note this is the first pass on it.  I will probably refine it more next week.