Remove target dependency in CalvinScripts

[patrikpersson]

Currently, the LOAD command takes a complete file name, including the file extension. Since the file extension depends on the node's target architecture, this means that this dependency crawls into the CalvinScript.

It would be better if, for example, file names were provided without extension, and Calvin added that itself before opening the file.

[HaraldGustafsson]

Fixed in commit e97e70b, although might have forgotten to update all examples, but the calvin itself, the decodeDemo example actors and decoderDemo.py works on both Linux and Mac with only a recompilation.