cclash should attempt to handle '/' style paths

[inorton]

Where we use cclash we already have another wrapper that corrects paths from unix "/" to windows "" styles so we've not run into needing this. But I will make a stab at sorting this out.

[thierryba]

I just tried with a cmake based project and indeed it fails because paths are with '/'
System.ArgumentException: Illegal characters in path.

[inorton]

Thanks thierry, windows path handling is an abomination but I will look into it :)