[Pharo-project] A small change to SPort

Hi, (This is specially for Janko) I made a small change to SPort, because I need to execute command shell scripts, and the functionality is not implemented on SPort for Pharo. What I made is simply this: runShellCommandString: aCommandString | processClass | processClass := Smalltalk at: #OSProcess ifAbsent: [ self error: 'OSProcess is not installed, you need to install it before execute #runShellCommandString:']. ^processClass perform: #command: with: aCommandString. I want to commit it, but I don't have write rights to SPort project... can you add this method change? Cheers, Esteban